IB Marine Science Standard Level (SL) Practice Exam

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• Which current encircles Antarctica and is driven by westerly winds?
• Local or regional atmospheric disturbances characterized by strong winds often accompanied by precipitation.
• What is the long-term average of weather in a given area?
• Which term describes the rigid outer layer of Earth including crust and uppermost mantle?
• Which term denotes the class that includes humans and whales?
• In addition to the five gyres, which major current is recognized around Antarctica?
• The formation of layers in a material, with deeper layers denser than above.
• On shore movement of air as inland air heats and rises.
• Barrier Islands are:
• Which term describes the stalk-like structure that supports the blades in some large seaweeds?
• Which process increases the frequency of advantageous heritable traits in a population?
• What is the imaginary line at 0 degrees latitude called in geography, equidistant from both poles?
• Which process describes the mixing of two water masses with identical densities but different temperatures and salinities, resulting in a denser mixture?
• Which term describes a sediment particle sized between gravel and silt, commonly forming beaches and deserts?
• Water circulation produced by differences in temperature and/or salinity (and therefore density).
• Which term describes a nutrient that varies with biological activity rather than being transported conservatively by physical processes?
• What term refers to the submerged outer edge of a continent, made of granitic crust and including the shelf and slope?
• A graph showing the relationship of temperature and salinity with depth.
• Which term describes the daytime onshore flow from sea to land as the land heats?
• Which term describes a body of seawater with relatively uniform properties that moves as a unit?
• Which tide is associated with the Sun's gravity rather than the Moon's?
• Which term describes synchronized movement in a coordinated group of fish?
• What term refers to a spring of hot, mineral- and gas-rich seawater found on ocean ridges in zones of active seafloor spreading?
• Which term refers to a solution with equal solute concentration inside and outside the cell?
• Which feature is defined as the equatorial region where the trade winds converge, usually near the meteorological equator?
• What is the buoyant organ found in some large brown algae that helps maintain vertical position?
• In ecological terms, a defined region within an ecosystem, such as littoral or sublittoral, is called a ...
• During embryonic development in most vertebrates, the notochord is replaced by which structure?
• Which term describes the filter-feeding structures in baleen whales?
• The functional role of an organism in its ecosystem?
• Which term describes marine plants that form underwater meadows in shallow seas?
• One of several periods of relatively low temperature during the last million years that lowered sea level by at least 100 meters.
• Speed of advance of a wave train; for deep-water waves, half the speed of individual waves within the group is known as what?
• Which term describes a relationship that is specific to a pair of species and not general?
• Which tide occurs when Earth, Moon, Sun form a right angle, resulting in the smallest tidal variation?
• A time of no tide-induced currents that occurs when the current changes direction.
• Desiccation is best described as?
• What is the term for vertical movement in surface water caused by wind?
• An atoll is best described as:
• Odontoceti are characterized by which feature?
• A narrow waterway that connects the open sea with a coastal lagoon, often between barrier islands, is called an what?
• Which term best describes the layer of gas surrounding a planet?
• In an ecosystem, which factor includes interactions among living organisms such as predation and competition?
• Which breaking wave topples forward and forms an air-filled tube?
• What term describes the pattern of alternating strong and weak wave heights due to interference, often called a beating pattern?
• Which term describes a sand or gravel feature that connects an island to the mainland?
• What is the boundary between two air masses of different density, often caused by differences in temperature and humidity?
• What term describes precipitation and wind produced by the meeting of two air masses associated with an extratropical cyclone, typically with one air mass sliding over or under the other?
• Which term describes the global-scale pattern of air movement that includes three circulation cells per hemisphere?
• Which process describes heat transfer in fluids by the bulk movement of the fluid itself?
• Which term describes organisms that are planktonic only during larval or juvenile stages?
• Which term denotes the group of green algae?
• Which current study method measures the current as it flows past a fixed object?
• In an atom, the nucleus contains?
• Which term describes sediment originating from continental erosion and river transport?
• The Oxygen Revolution refers to the rise of oxygen in Earth's atmosphere and oceans primarily due to
• The height of the ocean surface averaged over a few years is known as what?
• In a marine food web, what term describes an organism that eats primary producers?
• Which term refers to Earth's central solid sphere?
• Which term serves as a long-term reference for sea surface height, representing the average over many years?
• Which passive process moves molecules from high to low concentration without energy input?
• Cold, dense water formed in the Arctic that flows onto the floor of the North Atlantic Ocean is called?
• What term denotes a wind-generated wave formed by wind action on the ocean surface?
• Which term refers to the physical environment where an organism lives?
• The abrupt increase in slope at the junction between continental shelf and continental slope.
• The Deep Zone of the ocean is characterized by?
• Which term refers to the number of crests passing a fixed point per second?
• What is the basic unit of matter that defines each element?
• In waves, which type occurs when water depth is greater than half of the wavelength?
• Which process best explains the formation of an atoll?
• Which term refers to segmentation in animals?
• Which landform is an elongated hill of glacial material deposited parallel to glacial movement?
• The acronym ENSO represents the coupled phenomena of El Niño and which oscillation?
• What is the horizontal distance between two successive wave crests (or troughs) in a progressive wave?
• Which current is a weak, cold, diffuse, slow-moving current at the Eastern boundary, examples include the Canary and Humboldt currents?
• Which field of geology studies layered sedimentary rocks and their relative ages?
• Which theory/model of tides accounts for finite ocean depth, basin resonances, and the interference of continents on tide waves?
• Which class includes squid and octopus?
• The time of greatest variation between high and low tides occurring when Earth, moon, sun form a straight line. Spring tides alternate with neap tides throughout the year, occurring at two-week intervals.
• Which term describes the largest order of aquatic mammals that includes whales and dolphins?
• Which type of pigments are non-chlorophyll pigments that expand light absorption range in photosynthesis?
• Barrier Reefs are described as:
• The long-term average of weather in a region is what?
• Which term describes a long stretch of coastline that acts as a sediment-management unit with connected beaches and headlands?
• Kelp refers to which type of organism?
• Which statement describes a rip current?
• What term describes the wearing away of coastlines by waves, currents, and weathering?
• Which term refers to warm carbonate sand grains formed by ooids?
• Which term denotes the transfer of heat through matter by direct particle contact between molecules?
• What term describes a 'no-tide' point in the ocean caused by basin resonances, friction, and other factors around which tide crests rotate?
• Which term describes a standing wave pattern formed by resonance in a basin due to tidal or meteorological forces?
• The oxygen minimum zone is best described as which of the following?
• Which tide is caused by gravitational and inertial interaction of the moon and Earth?
• Which structure is designed to protect harbor entrances by dissipating approaching waves?
• Which scientific discipline classifies organisms into a hierarchical system from kingdoms to species?
• What term describes the total solar energy received by Earth during a period and the total heat lost by reflection and radiation in the same period?
• Which process converts energy from light or sound into heat within a material?
• Which term describes non-living environmental influences such as temperature, salinity, and light that shape ecological interactions?
• A wave in which energy travels in one direction along the surface.
• Which term describes the raised, flat area at the back of a beach formed by ongoing sediment deposition?
• Which term describes the wind-driven wave that forms due to surface wind action?
• The rigid portion of Earth's mantle below the asthenosphere.
• Young seabed at the active spreading center of an ocean, boundary between diverging plates; often called a mid-ocean ridge, though less than 60% of the length exists at mid-ocean.
• Thermal inertia of an ocean water mass is primarily a function of which factors?
• What is the term for a heritable change in the DNA sequence?
• Which term describes a factor that limits population growth or distribution in an environment?
• Which statement best defines an element?
• Which sediment forms from precipitation of minerals directly from seawater?
• Which term explains the separation of waves by wavelength as they propagate away from where they formed?
• Which subatomic particle has positive charge?
• Which class includes birds?
• Which term is used for the distance between successive wave crests or troughs in a progressive wave?
• In the Northern Hemisphere, trade winds blow from which direction?
• The relatively light crystal rock forming continents with density about 2.7 g/cm^3 is called?
• Cohesion of water contributes to which property?
• Which term describes a tsunami caused by displacement of the earth along a fault?
• In temperate oceans, a pronounced thermocline is most likely found in which depth range during warm seasons?
• Which organism is a photosynthetic prokaryote known for oxygenic photosynthesis in marine environments?
• Which estuary condition describes a body of water with uniform salinity due to strong mixing?
• Which taxonomic class includes snails and slugs?
• Rip currents are best described as water moving:
• The low-water position corresponding to a tidal trough is called
• In a marine food web, what term describes a predator at the top of the chain with no natural enemies?
• What is the basic unit of an element that consists of a nucleus and electrons?
• A high, often breaking wave generated by a tide crest that advances rapidly up an estuary or river.
• Which term describes an external skeleton found in arthropods and some mollusks?
• A pattern of wind circulation that changes with the season. Also the rainy season in areas with monsoon wind patterns.
• Which biological process converts light energy into chemical energy, producing organic matter from carbon dioxide and water?
• What global sea-level change is caused by overall changes in water volume and land ice, affecting coastlines worldwide?
• Which layer beneath the lithosphere is characterized as the hot, partially molten region that drives plate motion?
• Which term best describes a distribution where individuals are evenly spaced due to spacing mechanisms?
• Deep-ocean floor made of basaltic crust.
• What is the rigid silica cell wall of diatoms called?
• Which coastal feature is the depression that lies between the shore and offshore longshore bars?
• Which statement describes a typical feature of Nematoda?
• Boundary between the polar cell and the Ferrel cell in each hemisphere.
• Which term is associated with the exchange of gases between an organism and its environment?
• Which process is the microbial loop primarily associated with recycling dissolved organic matter in the marine environment?
• What term is the time between successive wave crests passing a fixed point?
• In the context of air mass boundaries, which term describes the boundary between air masses of different density?
• Which statement about euryhaline organisms is correct?
• What term describes the state of the atmosphere at a specific place and time?
• Ecology is defined as the study of:
• The mass per unit volume of a substance, usually expressed in grams per cubic centimeter.
• Which marine zone extends from the low tide line to the edge of the continental shelf?
• Which organism is commonly classified as macroplankton?
• Which group performs photosynthesis and forms the base of most marine food webs in the sunlit zone?
• Which term describes animals whose body temperature varies with the environment?
• Proton placement.
• Which property change defines a halocline in the ocean?
• Platyhelminthes are best described as
• Backshore is the part of the shore that is:
• A ridge or mound of unconsolidated debris deposited by a glacier is called what?
• Which term refers to the group containing green algae?
• Circulation pattern in which surface water moves vertically downward.
• What term describes the region at the coast where waves commonly begin to break just offshore?
• The point in the orbit of a satellite where it is closest to the main body.
• What biogeochemical cycle involves the transformations of nitrogen through fixation, nitrification, assimilation, and denitrification?
• Which term is used to name a species by its formal Latin binomial?
• Which term denotes the energy input that starts wave formation?
• Which term denotes small free-floating animals in aquatic ecosystems?
• Which term describes an organism that can tolerate a wide range of temperatures?
• Which system provides a two-dimensional image of the seafloor by recording intensity of returned echoes along a line?
• Which term refers to sediment derived from extraterrestrial sources such as microtektites?
• What term refers to the envelope of gases surrounding a planet?
• Which term describes the vertical distance between the crest and trough of a wave?
• Tunicates are invertebrate marine animals also known as which of the following?
• What term is the point in the orbit of a satellite where it is farthest from the main body?
• Which term refers to the density measure?
• Which interaction benefits one organism at the expense of the other?
• What is the restoring force for Capillary Waves?
• Which fjord that has an estuarine environment at its mouth?
• Turbulence in the ocean primarily drives which process?
• Brown algae are classified in which phylum?
• The canonical Ekman transport is 90 degrees to the right of the wind in which hemisphere?
• An unusual rise in sea level as a result of the low atmospheric pressure and strong winds associated with a tropical cyclone. Onrushing sea water proceeds landfall and causes most of the damage to life and property.
• Which feature consists of rounded masses of metal oxides and hydroxides commonly found on the deep-sea floor?
• Passive sonar.
• What term refers to the length of time the wind blows over the ocean surface, a factor in wind wave development?
• Which term describes the skeletons of sharks and rays composed primarily of cartilage?
• Which boundary forms where plates push together and mountain ranges, island arcs, and trenches form?
• Which term denotes sediment formed when minerals precipitate within the water and accumulate on the seafloor?
• Which phylum includes jellyfish, corals, and sea anemones?
• Which term refers to a former order that included terrestrial carnivorans?
• Which group is known for a water vascular system used for movement and feeding?
• Which specialized stinging cell is characteristic of cnidarians?
• Which feature is used to remove excess salt in marine animals?
• Which term describes the leaf-like blade of many macroalgae?
• Which term refers to very small free-floating photosynthetic organisms that often dominate open-ocean surface waters?
• Which ocean depth zone is typically the deep, dark zone from about 4000 to 6000 meters?
• What term describes the microbial pathway that channels dissolved organic matter back into the food web via bacteria and microzooplankton?
• What is the transfer of heat through matter by direct particle-to-particle contact called?
• Which term describes planktonic organisms large enough to be seen with the naked eye, such as jellyfish?
• Which weather system is a low-pressure area with winds circulating counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere?
• What term describes a tidal cycle of one high tide and one low tide per day?
• Which class includes snakes, lizards, and turtles?
• Which term describes the mass flow of water linked to the passage of tidal crests or troughs?
• Which upwelling occurs when water moving westward near the equator is deflected poleward and replaced by nutrient-rich deep water?
• Sediment deriving primarily from land erosion and river transport is known as?
• Which term is used to denote carbon-containing organic material dissolved in water?
• Which term describes a dorsal-ventral color pattern that helps camouflage?
• Which marine zone lies below the intertidal zone and remains underwater at all times, often extending to the continental shelf?
• Which term refers to a sea urchin?
• Which phylum contains the class Cephalopoda?
• Which organisms carry out denitrification, converting nitrates into nitrogen gas in anaerobic conditions?
• Which current study method relies on the movement of a drift bottle or other free-floating object?
• Which depth zone is commonly defined as between 1000 and 4000 meters?
• Dissolved Organic Nitrogen refers to organic nitrogen compounds dissolved in water.
• Simultaneous wind waves of many wavelengths forming a chaotic ocean surface.
• Which term denotes a factor that limits biological processes, growth, or distribution in an environment?
• What term describes a rapid, global loss of a large number of species?
• Which term describes a drifting, free-floating organism that is a member of the plankton group?
• What term measures the disorder of a system in thermodynamics?
• Which coastal ecosystem is built by colonies of corals in warm, shallow seas?
• Which term describes reef-building corals that secrete calcium carbonate skeletons?
• Which coastal landform develops at a river mouth through the accumulation of sediments to form a fan-shaped area?
• Which term describes the network of feeding relationships in an ecosystem?
• Which term best describes sediment composed of the calcareous shells of marine microorganisms such as foraminifera?
• Which term denotes the deepest oceanic zone, characterized by trenches and extreme pressures?
• What is the name for the zone between the polar cell and the Ferrel cell?
• Which organisms form the base of the food web by converting inorganic carbon into organic matter?
• Which term refers to a device used to collect sediment samples by clamshell action?
• What is the largest ocean current that flows permanently eastward around Antarctica?
• Which term refers to jawless fishes?
• Which crust type is predominantly composed of granitic rocks and forms the landmasses?
• The Shore refers to:
• Which term refers to the long-range underwater sound channel used for detection at great distances?
• Which term best describes the horizontal movement of surface water driven by wind?
• Which term denotes the membranes involved in respiration for aquatic organisms?
• Which term describes the ability of a substance to float in a fluid?
• Which term describes a close ecological relationship between two species living in proximity, often affecting both?
• What term describes the condition in which total heat entering a system equals total heat leaving?
• What term describes substances required by living organisms in relatively large amounts for growth and metabolism, such as nitrates and phosphates?
• Which landform is formed by wave action carving cliffs and leaving a platform at the base?
• Which coastal zone lies between high and low tide lines and is regularly wetted by waves?
• Which statement best describes environmental resistance?
• A rapid and large increase in plankton biomass, often driven by nutrient upwelling or light, is known as what?
• Which term describes the total energy expenditure of an organism over time?
• Which term refers to the circular movement pattern of water particles at the air-sea interface?
• Which mammalian order includes dogs, cats, and seals?
• The brown algae, commonly large seaweeds found in temperate coastal waters, belong to which division?
• Which structure is a whip-like appendage used by many protists for locomotion?
• Which term describes the gently sloping submerged extension of a continent, granitic rock overlain by sediments, with features similar to the edge of the nearby continent?
• Which term refers to a tidal cycle with two high tides and two low tides per day, but with unequal heights between high tides?
• Which term denotes the phylum consisting of animals with pore-bearing bodies and no true tissues?
• Which term denotes sediments that settle through the water column away from coastlines?
• Which term is used to describe the long-range propagation of sound in the ocean due to refraction in the SOFAR channel?
• Which term describes the body of a seaweed that is not differentiated into true roots, stems, or leaves?
• Environmental resistance refers to:
• Which term describes an organism that can tolerate a wide range of salinities and is common in estuaries?
• Which term refers to a solution with higher solute concentration outside the cell, causing water to move out?
• A Sea Island is typically formed by:
• Which term describes the point in a satellite's orbit where it is closest to the main body?
• Which term refers to the energy required to convert a liquid to a gas at its boiling point?
• Which technique studies ocean structure by emitting low-frequency sound pulses to detect variations in water temperature, salinity, and movement below the surface?
• What term describes the gradually sloping submerged extension of a continent, composed of granitic rock overlain by sediments, with features similar to the edge of the nearby continent?
• Which term refers to algae that are unicellular?
• What is the term for the gently sloping sandy shore that forms along a coastline?
• In shallow water where depth is less than half the wavelength, which transition in particle motion occurs?
• What is the innermost layer of Earth, primarily iron with nickel?
• Which circulation is driven by density differences arising from temperature and/or salinity?
• Which term describes the network of feeding relationships showing who eats whom in an ecosystem?
• Which term describes extremely small plankton, typically less than 2 micrometers, including many cyanobacteria?
• Which term describes pendulum-like standing waves in enclosed areas?
• What characterizes a Partially Mixed Estuary?
• Which term refers to the sediment composed mainly of clay particles?
• Which organism is able to produce organic matter from inorganic sources using light or chemical energy?
• Which statement best describes Nematoda?
• Which term describes a diurnal tide, characterized by one high tide and one low tide each day?
• The addition of wave energy when waves interact to produce larger waves is known as?
• Which equipment provides a nadir-free, swath image of the seafloor by emitting side-by-side pings?
• Which term denotes a parasite-host interaction?
• Which coastal feature is a steep face formed by the retreat of the beach due to erosion?
• Which term describes a flowering land plant that produces seeds enclosed in an ovary?
• Which sediment grain size category ranges from 0.0625 to 2 millimeters?
• The sloping transition between the granite of the continent and the basalt of the seabed; the true edge of a continent.
• What is the apparent deflection of a moving object from its initial course due to Earth's rotation, deflecting to the right in the Northern Hemisphere and to the left in the Southern Hemisphere?
• Which atmospheric circulation cell lies closest to the equator in each hemisphere, with rising air near the equator and sinking at about 30 degrees latitude?
• Which microscopic plankton has a silica-based skeleton and is used in paleoceanography as indicators?
• Which term describes a marine plant that forms beds in shallow coastal waters?
• Which term describes the deflection of moving objects caused by Earth's rotation, with no effect at the equator?
• Backshore zones are typically exposed to waves under which conditions?
• Which coastal zone lies between the high-tide line and the low-tide line?
• A surface current flowing in the opposite direction from an adjacent surface current.
• Which term describes the spatial pattern of individuals with no apparent pattern?
• What term describes rainfall in the form of rain, hail, or snow?
• Which term is the highest part of a progressive wave above the average water level?
• A tiny wave with a wavelength less than 1.73 centimeters, whose restoring force is surface tension, is called a Capillary Wave.
• A circular or elliptical projection from the seafloor, more than 1 kilometer in height, with a relatively steep slope of 20-25 degrees.
• Which seafloor feature is a circular or elliptical projection rising more than 1 kilometer with a steep slope?
• Which term describes organisms anchored to a substrate and do not move?
• Which phenomenon describes a southward flowing warm water current off the western coast of South America caused by breakdown of trade winds?
• Curving chain of volcanic islands and seamounts almost always found paralleling the concave edge of a trench.
• Commensalism is best defined as?
• What is the term for the rigid mantle layer situated below the asthenosphere?
• Which term describes a body symmetry with a central axis?
• Which biological process requires energy to move substances across cell membranes against a gradient?
• What term refers to inherited traits that improve an organism's fitness in a given environment?
• What refers to the vertical distance between a crest and the adjacent troughs?
• Which feature best defines a Sandbar?
• Which organism is a photosynthetic protist often responsible for red tides?
• Which term describes sediment of biological origin formed from the accumulation of organic remains such as shells?
• What is the strong western boundary current of the North Atlantic, off the Atlantic coast of the United States?
• Which area is the sheltered, brackish transition zone where a river meets the sea?
• Which term describes marine organisms that produce calcareous plates contributing to carbonate sediments?
• Which unit is used to measure energy content in food?
• Which common zooplankton crustacean is widely found in marine ecosystems and important in food webs?
• Which term refers to the foamy water that rushes toward shore after a wave breaks?
• A Sea Island is best described as:
• Pendulum-like rocking of water in an enclosed area; a form of standing wave that can be caused by meteorological or seismic forces.
• Which feature corresponds to a small sediment-covered inactive volcano or intrusion of molten rock less than 200 meters high, thought to be associated with seafloor spreading?
• Which term refers to the model of tides that postulates an Earth with uniform depth ocean and instantaneous response to solar and lunar gravity?
• Which term refers to organisms that tolerate only a narrow range of temperatures?
• The mass movement of air is defined as what?
• What term names the view that Earth’s surface features were formed by catastrophic events rather than slow, gradual processes?
• What term refers to the total amount of biomass produced per unit area per unit time by photosynthesis?
• A coastline characterized by strong wave action and powerful coastal erosion processes is known as what?
• What is a hydrogen bond?
• Which statement best defines temperature in the context of oceanography?
• What term denotes the outermost cool rigid layer consisting of crust and upper mantle?
• Which sediment type forms from the evaporation of seawater and precipitation of minerals such as halite?
• Which symmetry type is common in cnidarians and echinoderms?
• Teleostei are a subgroup within which larger vertebrate group?
• In the Hadley cell, where does air rise and where does it sink?
• Which term refers to the capacity to do work or drive biological processes?
• Which landform is a sandbank that runs roughly parallel to the shoreline and is formed by the deposition from longshore drift?
• Which term describes organisms with a notochord at some life stage, including humans?
• Which landform is a sandbank formed parallel to the coast and produced by longshore drift?
• Which coastal current runs parallel to the shore and is driven by waves arriving at an angle?
• Mass flow of water induced by the raising or lowering of sea level owing to passage of tidal crests or troughs.
• Which term is used to denote a plant that produces seeds within a fruit?
• A unit of volume transport named in honor of oceanographer Harald U. Sverdrup: 1 million cubic meters of water flowing past a fixed point each second.
• Osteichthyes are defined by
• Which scientist established the binomial nomenclature system used to name species?
• Which sediment type is formed by ooids presenting concentric layers around a nucleus?
• What is the name of the theoretical model describing how wind affects surface water and causes depth-varying flow?
• Pycnocline definition.
• Which term describes single-celled algae with calcareous plates that accumulate to form biogenic sediments?
• Which phylum includes insects, arachnids, and crustaceans?
• Which term describes the rapid, high-energy impact waves have on shore organisms?
• Which tidal pattern has two high tides and two low tides each lunar day, with the highs nearly equal in height?
• Molten rock capable of fluid flow; called lava above the ground.
• Which whale suborder includes baleen whales?
• Which sediment size is finer than sand but coarser than clay?
• Which organism is a small pelagic mollusk known as a sea butterfly?
• Which term describes a feeding method that relies on filtering particles suspended in water?
• Which type of symmetry do most animals, including humans, exhibit?
• What term describes the increase in speed of geostrophic currents as they pass along the western boundary of an ocean basin?
• The subtraction of wave energy as waves interact, producing smaller waves is known as what?
• What term is the valley between wave crests below the average water level in a progressive wave?
• Which surface wind pattern forms within the Hadley cells around 15 degrees latitude, blowing from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere?
• Which process turns loose sediment into rock?
• Which distribution pattern describes evenly spaced individuals due to competition or territoriality?
• Which sediment is an ooze composed mostly of hard remains of organisms containing calcium carbonate?
• Which term refers to the seabed community and environments?
• Which term describes the free-swimming life stage of cnidarians?
• Which factor most strongly affects the viscosity of seawater?
• Movement of air off shore as marine air heats and rises.
• Which group includes all mammals?
• The notochord is best described as
• Which group comprises cartilaginous fishes like sharks and rays?
• Which feeding method involves filtering small particles suspended in water?
• Which term captures the ecological role of an organism, including resources used and interactions?
• Which term refers to a device used to collect plankton from seawater?
• Which term describes the open-ocean environment beyond the continental shelf?
• Which term describes a shell valve in mollusks?
• Which relationship explains why small aquatic organisms exchange substances with their environment more rapidly on a per-gram basis than larger organisms?
• What term describes the solid masses of the continents, composed mainly of granite?
• The irregular imaginary line of thermal equilibrium between hemispheres, situated about 5 degrees North of the geographical equator and its positions changes with the seasons, moving slightly North in northern summer.
• A wave in which the water is deeper than one-half of its wavelength is termed a...
• Which term describes organisms that spend their entire life cycle as plankton?
• Which term describes the height-to-wavelength ratio representing the theoretical maximum steepness in shallow water?
• Which term is used for a basic progressive wave where the wave form travels in one direction along the surface?
• What term describes the depth where photosynthesis balances respiration in the water column?
• Which subatomic particle carries a negative charge and orbits the nucleus?
• Which term describes the energy stored in chemical bonds and available to do work in living systems?
• Which coast type is characterized by retreat and cliff erosion with little sediment deposition?
• Which term describes manganese-rich rock particles found on the ocean floor?
• Which term refers to animals with a spinal column?
• Which pigment is essential for capturing light energy in photosynthesis?
• What term describes the current that flows parallel to the shore, generated by waves approaching at an angle?
• What is the outermost solid surface of the Earth beneath ocean floor sediments, composed primarily of basalt?
• Deep Scattering Layer refers to?
• Which term describes the density, typically expressed in grams per cubic centimeter?
• What term denotes the rate at which producers generate biomass in an ecosystem?
• The brittle, relatively cool outer layer of Earth, consisting of the oceanic and continental crust and the outermost, rigid layer of mantle.
• Which term refers to a shallow coastal water body that is separated from the sea by a barrier such as a sand spit or reef?
• In oceanography, which term describes the upper ocean layer that is well mixed, with relatively uniform properties?
• What is the term for the circuit of mid-latitude currents around the periphery of an ocean basin?
• Which term describes the calcareous or siliceous shells of microscopic marine organisms that accumulate on the seafloor?
• Which sensory system detects water movement along the body in fishes?
• Which term describes a defined geographic or vertical region within a marine ecosystem?
• Which term denotes the broad, flat, sediment-covered ocean floor located far from continents?
• The siliceous cell walls of diatoms are called what?
• Which term refers to the equatorial ITCZ, the region where the trade winds converge?
• Which microorganisms are primarily responsible for oxidizing ammonium to nitrite and nitrite to nitrate in the nitrogen cycle?
• What is a Sand Spit?
• Tide caused by the gravitational and inertial interaction of the sun and Earth.
• What term is the reference level from which tidal height is measured?
• The body of a seaweed is called a
• The number of individuals per unit area or volume?
• The arrangement of individuals in a population across the landscape?
• Which term describes Linnaeus's approach to classifying living things into a hierarchical system?
• What term describes the evolution of similar traits in unrelated species due to similar environmental pressures?
• Vertebrata refers to animals with what characteristic?
• What term describes the flat, cold, sediment-covered ocean floor between the continental rise and the oceanic ridge at depths of 3,700 to 5,500 meters?
• Which marine zone lies near the surface over the continental shelf?
• Which protist is characterized by a complex cell covering and two flagella?
• Which group includes manatees and dugongs?
• What is the meteorological feature described as a low-pressure, mid-latitude weather system characterized by converging winds and ascending air that rotates counterclockwise in the Northern Hemisphere?
• Which term describes the layer of the ocean where the sound channel exists, enabling long-range acoustic propagation?
• Which term describes a body of shallow water behind a barrier such as a sand spit or coral reef?
• A deep, V-shaped valley running roughly perpendicular to the shoreline and cutting across the edge of the continental shelf and slope.
• Which term describes the energy-transporting location around which tide crests rotate in some basins?
• Which tide occurs at two-week intervals and involves a maximum difference between high and low tides?
• Which oceanic layer is the twilight zone where there is some light but not enough for photosynthesis?
• Which term describes the broad taxonomic category under which organisms are classified in the traditional Linnaean system?
• Which coloration strategy involves resembling the background to avoid detection?
• In the Ekman Spiral, deeper layers drift progressively to which direction relative to the surface flow in the Northern Hemisphere?
• Which term refers to the phylum that includes sea stars, sea urchins, and sea cucumbers?
• What term describes a spring of hot, mineral- and gas-rich seawater found on some oceanic ridges?
• Teleostei are a major group of which fishes?
• A substance formed from two or more elements chemically combined in fixed proportions is a?
• Which term refers to the attachment of surfaces or molecules?
• What term describes a gyre or current in balance between the Coriolis effect and gravity, literally meaning 'turned by Earth'?
• Photic Zone: Which layer is sunlit for photosynthesis?
• Which distribution pattern is most likely for a marine population when resources are patchy?
• The submerged outer edge of a continent, made of granitic crust; includes the continental shelf and continental slope.
• Which term is a graph showing the relationship of temperature and salinity with depth?
• The longshore transport of sediment along a shoreline, driven by oblique waves, is known as what?
• What term describes a flat-topped, submerged, inactive volcano?
• Which term refers to the subphylum that includes lobsters and shrimps?
• What term refers to the crest of the wave causing tides; not a tsunami or seismic sea wave?
• Which term describes the ecological change in community structure over time after a disturbance?
• Which process uses chemical energy to synthesize organic matter, typical in hydrothermal vent ecosystems?
• Which term refers to baleen whales that filter feed?
• Which ocean zone is characterized by little to no sunlight?
• A tide influenced by the weather; storm surge arrival will alter the tide's height or arrival time, as will a strong, steady onshore or offshore wind.
• Which landform forms at the mouth of a river when sediments are deposited to create a triangular area?
• What term describes a large body of air with nearly uniform temperature, humidity, and density?
• What is the sedimentary bed deposited by turbidity currents called?
• Which term would most accurately describe a microorganism that thrives in extremely hot environments?
• Which term describes a surface wave in which water particles move in closed circles that decrease with depth?
• Which term describes upwelling that occurs adjacent to a coast, usually induced by wind?
• Which term describes a surface current flowing in the opposite direction to an adjacent surface current?
• In sonar, the region where acoustic signals are not received due to refraction is called?
• The point on Earth's surface directly above the focus of an earthquake.
• What term is the point in a satellite's orbit where it is farthest from the Sun?
• Which term denotes the steep, eroded face that can remain on a beach after shoreline retreat?
• The temperature at which a liquid turns into a solid is known as what?
• What defines a molecule?
• Which term refers to the detection of objects by emitting sound and listening for echoes?
• Which tiny crustacean forms a major component of Antarctic zooplankton?
• Which term describes the rapid energy impact of breaking waves on coastal organisms?
• What is the buoyancy organ in many bony fishes?
• Climax community is best described as?
• What is the name for a large tropical cyclone in the North Atlantic or Eastern Pacific with winds exceeding 118 km/h?
• What term describes a group of waves of similar wavelength and period moving in the same direction across the ocean surface?
• Which term denotes the reflection of progressive waves by a vertical barrier?
• A current flowing beneath a surface current, usually in the opposite direction.
• In marine vertebrates, osmoregulation in gills is primarily mediated by which cells?
• Which process describes energy being absorbed rather than reflected or transmitted?
• The attraction between like molecules that contributes to water's surface tension is known as?
• A tidal cycle of two high tides and two low tides each lunar day, with the high tides of nearly equal height.
• Liquid or solid water that falls from the air and reaches the surface as rain, hail, or snowfall.
• In which ocean layer is dissolved oxygen commonly at its lowest in many regions?
• Which unicellular organism forms calcium carbonate shells and is widely used as a proxy in paleontology?
• Polar Molecule description.
• Which term describes single-celled photosynthetic organisms?
• Which term describes the slowing and bending of progressive waves in shallow water?
• Which scientist (1862-1951) pioneered the understanding of extra-tropical cyclones?
• In ecology, which term best describes living components such as producers, consumers, and predators that influence an ecosystem?
• Which group includes organisms that can swim and move independently in the pelagic zone?
• Which zone is the twilight layer of the ocean where there is some light but not enough for photosynthesis?
• The atmospheric circulation cell centered over each pole.
• What term describes the specialized aerial roots used by mangroves to facilitate gas exchange?
• What is the uninterrupted distance over which the wind blows without a significant change in direction?
• Which classification system is defined as artificial, based on a few simple criteria rather than evolutionary relationships?
• Which property describes the cohesive force at the air-water interface, affecting droplet formation?
• Which term describes the periodic shedding of the exoskeleton in arthropods and some other invertebrates?
• Viscosity is a measure of which property of a fluid?
• Which device is used to sample sediment from the seafloor and is known as the clamshell sampler?
• Which term denotes the deepest oceanic zone?
• What term describes the tidal levels and character which would result from gravitational effects, e.g. of the Earth, Sun and Moon, without any atmospheric influences?
• Which zone experiences immersion and exposure due to tides?
• Which current is a strong, warm, concentrated, fast-moving current at the western boundary of an ocean basin (for example around the Gulf Stream or Kuroshio)?
• Which term stands for the depth at which calcium carbonate begins to dissolve faster than it accumulates?
• Which statement correctly defines a biological community?
• What term describes random heritable changes in DNA that can lead to new traits?
• Which term is used for the speed at which the energy in a wave group travels?
• Which term describes a solution with lower solute concentration outside the cell than inside, causing water to move in?
• The discovery and study of submerged contours is called what?
• Which term refers to the farthest point in a satellite's orbit from the Earth?
• Which term refers to organisms that can withstand only a narrow range of temperatures?
• A reversal of airflow between normally low atmospheric pressure over the western Pacific; the cause of El Nino.
• Brackish water is best described as water with what salinity range?
• Which term is a phylum of marine invertebrates that includes starfish and sea urchins?
• What is the term for the small net transport of water in the direction of a traveling wind wave?
• Which structure acts as the anchor for many seaweeds to attach to substrates?
• What term describes the net transport of water resulting from the Ekman spiral?
• What term describes non-living environmental influences such as temperature and light that shape organisms' life processes?
• Which structure anchors seaweeds to the substrate?
• Which term refers to a sea state with many wavelengths creating a chaotic surface?
• Which boundary is characterized by plates colliding and high seismic activity?
• What is the term for a localized, narrow, violent funnel of wind formed when two air masses collide?
• Which feature marks the position of a previously active transform fault and is seismically inactive?
• Which French scientist (1792-1843) worked out the mathematics of the motion of bodies on a rotating surface, the Coriolis effect?
• Which coastal feature serves as a protective barrier extending into the sea to reduce wave energy at harbors?
• Which statement best describes a Sea Cave?
• Which rock type forms the seabed crust and has a density of about 2.9 g/cm^3?
• Which process enables certain microorganisms to synthesize organic matter using energy derived from chemical reactions, not sunlight?
• A wave with wavelength greater than 1.73 cm whose restoring forces are gravity and momentum is called what?
• During which event does the eastern South Pacific surface temperature drop below average, usually at end of ENSO?
• Which term refers to the continental margin near an area of lithospheric plate convergence, also known as the Pacific-type Margin?
• Which term describes organisms that regulate their body temperature internally?
• Which term specifically refers to reef-building corals?
• Which term describes the arrangement of biological classification into ranked levels, such as kingdom, phylum, and class?
• Which discipline focuses on the order of rock layers and their relative ages?
• Which formula relates wave phase speed C to gravity g and depth d for shallow-water waves?
• Cartilage is best described as which type of tissue?
• Which coastal feature forms across the mouth of a bay and may trap a lagoon behind it?
• The continental margin near an area of lithospheric plate divergence; also called an Atlantic-type margin.
• Which term describes the bending of waves around obstacles?
• The branch of geology that deals with the arrangement of sedimentary layers and their relative ages is called?
• Which organism group is composed of porous bodies with choanocytes and no true tissues?
• Which term denotes the farthest point in a satellite's orbit from the Sun?
• What is the name of the pattern of constructive and destructive interference that causes successive breaking waves to grow and shrink over several minutes?
• Which phylum is characterized by a water vascular system?
• Which zone in aquatic environments is the upper layer where light supports photosynthesis?
• What term is used to describe the formal two-word Latin name given to a species?
• What term describes a single closed-flow circuit of rising warm material and falling cool material?
• In marine ecology, which term describes the physical setting used by an organism to survive?
• Which term describes organisms capable of movement?
• Which unit is named in honor of Sverdrup?
• Area of irregular, seismically inactive topography marking the position of a once-active transform fault.
• A shallow coastal water body that is separated from the open sea by a barrier is called what?
• Which term describes the highest level consumer in a marine food chain that preys on other consumers?
• Which term refers to a photosynthetic bacteria commonly found in marine environments?
• Which term describes the maximum wave height achievable under a given wind condition?
• In a Salt Wedge Estuary, which describes the salinity arrangement?
• The wedge of sediment forming the gentle transition from the outer (lower) edge of the continental slope to the abyssal plain; usually associated with passive margins.
• Which sediment is finer than sand and commonly forms in calm water conditions?
• What is the zone of rising air near the equator known for sultry air and variable breezes?
• What term is used for the resistance experienced by a moving organism in water?
• Which term describes a fracture in a rock mass along which movement has occurred?
• What term refers to organisms that thrive in extreme environmental conditions?
• Which structure is used for gas exchange in many aquatic animals, including fish?
• Which term describes sediments derived from erosion of land and deposited on the continental shelf?
• Which term best describes the study of how biological traits change over generations within populations?
• What term describes water rushing into an enclosed harbor or bay because of the rise in sea level as a tide crest approaches?
• A thermostatic property is defined as:
• In photosynthesis, pigments other than chlorophyll that broaden the range of light absorbed are called ...
• Which term describes an organism that cannot synthesize its own organic compounds and must obtain energy by consuming others?
• Which group includes gentle aquatic herbivores like manatees and dugongs?
• Which description best characterizes a climax community?
• Which term describes organisms that live on or at the seabed?
• What is the theory that the continents move slowly across the Earth's surface?
• Which equation expresses the velocity of shallow-water waves as the square root of gravity times depth?
• Which term describes the evolution of similar traits in unrelated species due to similar environmental pressures?
• Which phylum consists of sponges with no true tissues?
• Which term refers to the general category of unconsolidated material at the Earth’s surface, including various grain sizes?
• In seismology, which type of wave moves through the interior of the Earth rather than along the surface?
• Which term describes the rate at which an organism uses energy to sustain life?
• Which landform is formed at a river mouth by sediment deposition, often expanding into a fan-shaped area?
• A wave in water shallower than 1/20 its wavelength is called which type?
• Which term denotes the process of moving substances across a membrane with energy, often against a gradient?
• Which organism is a crustacean zooplankton commonly found in marine ecosystems?
• Which term describes sediment derived from land sources?
• Which cycle involves the exchange of carbon among the atmosphere, oceans, soil, and living organisms?
• A Sea Cliff is best described as:
• Which term describes the movement of nitrogen through living systems and the environment?
• Which mollusk class includes snails and slugs?
• Which term describes a gradual change in wave direction due to varying depths?
• Which of the following best describes the Deep Zone in the ocean?
• What process involves movement within a fluid driven by differences in temperature, leading to mixing?
• Antarctic Bottom Water forms primarily in which area?
• What term describes the average speed of the wind, a factor in wind wave development?
• Which theory holds that Earth's surface features were formed by catastrophic events, such as a biblical flood?
• Which term describes sediment formed from extraterrestrial matter such as tektites?
• Any energetic extratropical cyclone that sweeps the eastern seaboard of North America in winter.
• Which mollusk class includes clams, mussels, and oysters?
• Which tide theory assumes Earth is covered by an ocean of great and uniform depth capable of instantaneous response to the gravitational and inertial forces of the sun and moon?
• Which term best describes the general land-sea boundary along a shoreline?
• Which term denotes a group of red algae?
• What is the region between the breaking waves and the shore called?
• Which term describes an animal whose body temperature matches the environment?
• Which term refers to organisms that cannot tolerate significant changes in salinity?
• Which term describes the steep transition between continental crust and oceanic crust at the edge of a continent?
• Which single-celled marine organism forms calcium carbonate shells called tests?
• Photic Zone process.
• Which term would you use to describe a barrier–oriented construction that intercepts longshore drift and creates a sheltered water behind it, often requiring maintenance?
• What is the term for a plane along which rock masses slide horizontally past one another?
• Cephalopoda, a class containing octopus and squid, belongs to which phylum?
• What instrument is used to obtain long, continuous sediment cores from the seabed?
• Which term describes a group of organisms that can interbreed to produce fertile offspring?
• Which is the outermost solid layer of Earth, the top of the lithosphere?
• What sampling device is used to recover long, undisturbed sediment cores from the seabed?
• What term refers to something that can satisfy hunger and provide energy?
• Which ocean current is driven by powerful westerly winds north of Antarctica and is the largest ocean current, continuing permanently eastward?
• Backwash refers to:
• Which term represents the solid inorganic material that makes up rocks and sediments?
• What is the gaseous, invisible form of water?
• The dominant force trying to return water to flatness after formation of a wave.
• The temperature above which a material loses its magnetism.
• Which term describes the belt of deserts and dry air around 30 degrees latitude, where Sahara is located?
• The energy content of food is commonly expressed in kilocalories; one kilocalorie equals 4184 joules.
• The high-water position corresponding to a tidal crest is called what?
• Which term refers to sediment formed by minerals precipitated directly from seawater?
• Which statement distinguishes Platyhelminthes from Nematoda?
• Which landform is a glacial valley that has been flooded by seawater, creating a sea-filled, U-shaped inlet?
• Which term describes the energy required for a substance to change from a solid to a liquid at its melting point without a change in temperature?
• Which term refers to the open-water portion of the ocean's water column, away from the shore and bottom?
• What term describes carbon-containing organic compounds dissolved in water?
• What is a thermocline in the ocean?
• Region where plates are moving apart and new ocean or rift valley forms; spreading center forms the junction.
• Which oceanographic term describes a vertical layer where salinity changes rapidly with depth?
• Which term includes creatures such as snails and slugs?
• A chemical bond that involves sharing electrons between two nonmetal atoms is called a covalent bond.
• Which phylum includes earthworms and leeches?
• What does high thermal inertia imply for ocean temperature in response to heat input?
• The stalk that supports the blade in kelp is called the
• Which term indicates sediments derived from the erosion of land and deposited on the continental shelf?
• The term for a drifting, free-swimming organism at the base of the plankton, sometimes used to describe larvae or small organisms, is?
• Which layer beneath the lithosphere is the hot, plastic region that powers plate tectonics?
• Which reef forms directly along the coastline in shallow tropical waters, often extending from the shore?
• Which term is the line along which waters of different density converge, forming the boundaries between climate zones?
• Which boundary is defined by plates moving apart, forming new ocean crust?
• Zooxanthellae are crucial to the vitality of which ecosystem?
• What sediment forms directly by precipitation from seawater and is hydrogenous?
• In a marine food web, which trophic level includes organisms that feed on primary producers?
• Density gradient pycnocline layer.
• Which distribution pattern is most commonly observed in patches where resources are unevenly distributed?
• Which principle states that energy transfer or transformation results in increased entropy and less usable energy?
• Which coastal zone lies between the high and low tide marks and is frequently sculpted by wave action?
• ENSO stands for which of the following?
• Biodiversity refers to which of the following?
• Which group of organisms commonly forms the base of many aquatic food webs and performs photosynthesis?
• Which term refers to nitrogen present as organic molecules dissolved in water?
• Which term describes a close, long-term interaction between two different species?
• In biology, who is credited with developing the binomial scientific naming system?
• A sudden motion of Earth's crust caused by faulting or volcanic activity.
• Which term describes heat that changes temperature but does not involve a phase change?
• Which rock type is commonly found in continental crust and is light in color, consisting mainly of quartz and feldspar?
• Which term denotes microscopic algae with silica-based shells that contribute to siliceous ooze?
• Which term describes the organisms that convert inorganic carbon into organic matter using light energy?
• Which term describes the order of fully aquatic mammals such as whales and dolphins?
• Ascending columns of superheated mantle originating at the core-mantle boundary.
• Which term describes a breaking wave where the crest slides down the front face of the wave?
• Which term is the height-to-wavelength ratio representing the theoretical maximum steepness in shallow water?
• Which bottom current flows around seabed projections rather than over them?
• Which term is specifically associated with extremely long wavelengths generated by sudden sea floor displacement, often in open ocean?
• A coastline characterized by gentle waves and minimal sediment transport is described as what?
• Which taxonomic group includes many red seaweed species and is represented by Rhodophyta?
• A breaking wave whose crest slides down the face is called what?
• Which tissue forms the skeleton of sharks?
• An extratropical cyclone forms at the front between which two atmospheric cells?
• Which device emits underwater sound and analyzes echoes to gain information on the seabed, biology, or military targets?
• Which term is the deep-ocean floor made of basaltic crust?
• Which term best describes a mechanical wave that travels through water and is the basis of underwater sound communication?
• Which term is the sense used by bats and dolphins to locate objects by emitting sound and listening for echoes?
• What is the densest ocean water mass, formed primarily in Antarctica's Weddell Sea during Southern Hemisphere winters?
• Which landform is a long, narrow hill formed by glacial till aligned in the direction of ice movement?
• Which scientist is credited with pioneering the understanding of extra-tropical cyclones?
• What is the theoretical maximum height attainable by ocean waves given wind strength, duration, and fetch?
• Which zone lies below the low tide line and extends to the edge of the continental shelf, remaining submerged year-round?
• A group of individuals of the same species living in a given area?
• In the Ekman Spiral, the surface layer drifts at what angle to the wind in the Northern Hemisphere?
• What is carrying capacity in population ecology?
• Which term describes the energy required to change a liquid to a gas at its boiling point?
• What circulation pattern describes the rise of deep, cold, nutrient-rich water to the surface?
• What term describes a long-wavelength, shallow-water wave caused by rapid displacement of water?
• What is the raised ridge at the back of a beach formed by deposited sediments called?
• Which term describes the ability of a substance to store thermal energy, defined as the amount of heat required to raise its temperature by 1°C?
• What term describes a progressive wave under the continuing influence of the forces that formed it?
• Which term describes the uppermost ocean layer affected by wind mixing and sunlight?
• Which wind system consists of surface winds in Ferrel cells near 45 degrees latitude, blowing from the southwest in the Northern Hemisphere and from the northwest in the Southern Hemisphere?
• What term describes a progressive wave free of the forces that formed it?
• What term describes the number of wave crests passing a fixed point per unit time?
• A device that reflects sound off the ocean bottom to sense water depth; accuracy affected by speed of sound in water.
• Mass flow of water; the term is usually reserved for horizontal movement.
• The Water-Vascular System is a characteristic feature of which group?
• What process involves the movement of water across a selectively permeable membrane from higher to lower water potential?
• Which term describes a progressive wave that continues to be influenced by the forces that formed it?
• Electrons location.
• Which life stage of cnidarians is free-swimming and bell-shaped?
• What is the term for the mass movement of air?
• Which atmospheric circulation cell is the middle cell in each hemisphere, with rising air around 60 degrees latitude and sinking around 30 degrees latitude?
• Which term refers to a bottom current made up of dense water that flows around seabed projections?
• Which relationship benefits both species?
• Which term describes a sea urchin's taxonomic classification?
• Which term best describes the collective community of drifting organisms in the ocean, including plants and animals?
• The layer of Earth between the crust and the core, composed of silicates of iron and magnesium. The mantle has an average density of about 4.5 g/cm^3 and accounts for about 68% of Earth's mass.
• The term for the acoustic navigation system that maps the sea floor by emitting sound pulses?
• A substance composed of two or more elements chemically combined in fixed proportions is a compound.
• Which landform is a deep, glacially carved inlet with high, steep walls or valleys?
• A surface expression of a plume of magma rising from a stationary heat source in the mantle is called a?
• Addition or subtraction of wave energy as waves interact, also called resonance.
• What does the acronym CCD stand for in marine geology?
• Refractive Index.
• Which sediment is defined as sediment of biological origin formed from calcareous or siliceous debris?
• Which term is used to describe the group of organisms capable of interbreeding and producing fertile offspring?
• Which phenomenon describes the large circuit of air driven by uneven solar heating and the Coriolis effect, with three circulation cells forming in each hemisphere?
• Which current is driven by powerful westerly winds north of Antarctica and is the largest of all ocean currents, continuing eastward indefinitely?
• Which term refers to a disturbance caused by the movement of energy through a medium?
• Which coastal setting is primarily built up by sediment deposition, creating broad beaches and lagoons?
• Which phylum includes animals with a dorsal hollow nerve cord at some life stage?
• The term describing the physical condition of matter in terms of phases such as solid, liquid, or gas?
• The point in the orbit of a satellite where it is closest to the sun.
• Which term describes a tide that is influenced by weather and can be affected by storm surge or wind?
• Which term refers to multicellular organisms in the animal kingdom?
• Refraction concept.
• Ophiuroidea are characterized by
• Which organism group includes plants and some bacteria that synthesize their own organic matter?
• Which term describes an animal that maintains its body temperature through metabolic heat?
• Which concept describes the change in allele frequencies in a population over generations?
• Which term denotes a long-term biological interaction between two species living in close proximity?
• What term is the difference in height between consecutive high and low tides?
• Which coastal feature is formed primarily by longshore drift transporting sand parallel to the coast?
• For deep-water waves, which relationship holds between velocity C, wavelength L, and period T?
• Nighttime offshore breeze moving air from land toward the sea.
• Which term denotes a small glassy particle formed by meteorite impact and found in ocean sediments?
• Which term describes a progressive wave occurring at the boundary between liquids of different densities?
• Acoustical Tomography senses differences in which properties to study ocean structure?
• Which group includes crabs, lobsters, and shrimp?
• Which feature is formed by wave erosion that creates hollow spaces in a cliff?
• Osmoregulation refers to
• Estuaries often contain brackish water due to mixing of
• Which feature is the elevated boundary at the active spreading center where oceanic plates move apart, often described as a mid-ocean ridge?
• Which term refers to the phylum that includes all vertebrates?
• What term describes the separation of wind waves by wavelength as they move away from the fetch?
• Which term best describes the strong, warm, concentrated, fast-moving current along the western boundary of an ocean basin?
• Which taxonomic group includes segmented worms such as bristle worms?
• What is the general term for the mass horizontal movement of seawater?
• In a Salt Wedge Estuary, the interface between saltwater and freshwater is typically:
• Which term describes a circular movement of water usually formed where currents pass obstructions or between two adjacent currents?
• Which organism is a microscopic plankton with a silica shell, often used in paleoceanography?
• Which cycle involves the movement of carbon among the atmosphere, oceans, soil, and living organisms?
• What term describes a standing wave in which there is no net transfer of energy?
• The sessile, vase-shaped body form seen in cnidarians is called a what?
• Which term describes the ability of a substance to store thermal energy, defined as the amount of heat required to raise its temperature by 1 degree Celsius?
• A single wave crest much higher than usual due to constructive interference.
• The line along which waters of different density converge, forming boundaries between major climate zones?
• A density curve of seawater typically shows density...
• Which term describes the deep ocean zone associated with trenches?
• Which term describes the energy required to change a solid to a liquid at the melting point without a temperature change?
• Which term refers to organisms that tolerate only a narrow range of salinities?
• Which progressive wave has particles move in closed circles?
• Swash is best described as:
• Which term refers to the exchange of oxygen and carbon dioxide in respiration?
• Which term is a global-scale circulation phenomenon linked to ENSO cycles?
• In a water molecule, how many types of atoms are present?
• What is the term for the total mass of living matter in a given area or ecosystem?
• Which term describes a substance that cannot be broken down into simpler substances by chemical means?
• Which coastal vegetation is adapted to saturated soils and typically has pneumatophores?
• Which field of study investigates past ocean conditions such as circulation and climate?
• Identify the term for shallow, wind-driven circulation of water in horizontal spiral bands.
• Which term denotes a taxonomic level used in classification that groups related organisms?
• Light bending phenomenon.
• Which term best describes mature wind-generated waves that have traveled away from their generation area?
• What term describes periodic shedding of the exoskeleton?
• Ocean wave conditions at a specific place and time, usually stated in the Beaufort scale.
• Which term describes the irregular line of thermal balance near the equator?
• Which feature is a curved chain of volcanic islands and seamounts that forms parallel to the edge of a trench?
• Which factor characterizes a Partially Mixed Estuary?
• Which coastal structure is built perpendicular to the shoreline to trap sand on the updrift side?
• What term describes a low-pressure weather system in the tropics with winds circulating counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere, which can intensify into hurricanes or typhoons?
• What is the term for the confused mass of agitated water rushing shoreward after a wind wave breaks?
• Which term refers to the energy that causes a wave to form?
• A diagram showing the distribution of energy or biomass among trophic levels in an ecosystem is called a ...
• What is the approximate density of Antarctic Bottom Water?
• Which term describes a layering where deeper layers are denser than those above?
• Within echinoderms, Ophiuroidea are most closely related to which group?
• Which term describes the sequential replacement of species in an ecosystem after a disturbance?
• Zooxanthellae are symbiotic algae that reside in the tissues of which organisms?
• Which class includes sea cucumbers?
• Which term denotes the layer within the ocean where the sound channel exists and enables long-range propagation?
• What term refers to water rushing out of an enclosed harbor or bay because of the fall in sea level as a tide trough approaches?
• Which term describes water moving into an enclosed harbor when crest approaches?
• What term describes the cyclic movement of nutrients between living organisms and the physical environment through biological, geological, and chemical processes?
• Isostatic Equilibrium is best described as the balanced support of lighter material in a heavier, displaced supporting matrix; analogous to buoyancy.
• What term refers to the hard, fibrous substance in the exoskeletons of arthropods and cell walls of fungi?
• Which group includes organisms that can swim actively and move independently of currents?
• The unit used to express water temperature on the Celsius scale is?
• The horizontal flow of water at the ocean's surface.
• Which term refers to the reef-building ecosystem found in warm, clear marine waters?
• Which phylum includes snails, clams, and squids?
• Which term refers to energy that is transferred between bodies due to a temperature difference?
• Which term refers to the electromagnetic radiation visible to the human eye?
• Which coastal landform is created by wave erosion at the base of cliffs, forming a flat bench?
• What term refers to mature wind-driven waves of one wavelength that form orderly undulations on the ocean surface?
• Which term describes a mass of hot, buoyant mantle material that rises through the mantle and may contribute to hotspot volcanism?
• Which class includes starfish and sea urchins?
• In biological classification, a phylum is best described as
• Which term describes an organism that consumes organic matter for energy?
• Which ocean zone is the deepest, generally dark and cold, roughly from 4000 to 6000 meters?
• What term describes the zones of irregular horizontal surface air circulation near 30 degrees North and 30 degrees South latitudes, where dry air descending from high altitudes can create deserts such as the Sahara?
• Desiccation adaptations help intertidal organisms to:
• Which term describes free-floating organisms that drift with currents and cannot swim against them?
• What term refers to a sedimentary deposit formed by a turbidity current?
• Which term describes a coastline dominated by erosion, featuring cliffs and sea-cut platforms?
• What term describes periodic short-term change in the ocean surface height at a location, caused by gravitational force and inertia?
• Which type of bond involves sharing electrons between atoms?
• A device that measures the amount and direction of residual magnetism in a rock sample.
• Which term denotes sediment of biological origin, consisting of calcareous or siliceous residues?
• Which sediment type is characterized by a wide range of grain sizes due to poor sorting?
• Pinnipedia includes which marine mammals?
• Which term denotes the layer of the upper ocean where light penetrates and mixing occurs, commonly called the surface layer?
• Which estuary is specifically a fjord inlet that remains connected to the sea and has a brackish water at its mouth?