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20 Cards in this Set
- Front
- Back
What is the process by which green plants and other producers use light energy to make food?
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photosynthesis
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Why is visibility decreased the deeper you go in the ocean?
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the surface water absorbs much of the sunlight
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How do temperature and pressure change as you go deeper into the ocean?
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Temperature decreases, pressure increases
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What unit is water pressure measured in?
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pounds per square inch
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What do all food chains in the ocean start with?
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phytoplankton
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What are 3 examples of nekton?
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fish, squid, octopus, whale, porpoise
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What 2 factors affect the density of ocean water?
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temperature and salinity
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What are 3 examples of benthos?
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clams, starfish, oysters, mussels, crabs, seaweed, coral, barnacles
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What are tiny living creatures that float near the surface and drift with the currents?
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plankton
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What are the 6 main substances that make up about 99% of all the dissolved materials in ocean water?
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sodium chloride, magnesium sulfate, magnesium chloride, calcium chloride, potassium chloride, sodium bicarbonate
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What are all of the free-swimming animals that live in the ocean?
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nekton
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What are the plants and animals that live on the ocean floor?
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benthos
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What is the total amount of dissolved salts on ocean water?
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salinity
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What are substances that wash into the ocean but do not dissolve?
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sediments
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What is ocean water?
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A mixture of the compound water(H20) and several salts.
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What are animal-like plankton?
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zooplankton
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Where did the salt in the present day oceans come from?
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When rainwater flows over the land, it dissolves and carries away traces of salt. The rainwater drains into rivers and streams and empties into the oceans.
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What are plantlike plankton?
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phytoplankton
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What causes the condition called the bends in SCUBA divers?
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nitrogen builds up in their body tissues, which forms bubbles in their blood
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What does SCUBA stand for?
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Self-Contained Underwater Breathing Apparatus
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