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45 Cards in this Set
- Front
- Back
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What do plants need in oceans to live?
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sunlight and nutrients
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Most of the ocean life is found in what kind of water?
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shallow, warm water
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Ocean life is also along the edges of what?
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continents
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Plants and animals that drift and move by surface currents are called?
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plankton
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What feed on plankton?
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animals
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Larger organisms like sea turtles and fish are free-swimming animals called what?
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nekton
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Plants and animals that live on the ocean have body parts that what?
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glow-in-the-dark
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Plants and animals that live on the ocean bottom are called what?
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benthos
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Deep ocean animals prey on each other or feed on what?
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remains of dead animals
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Ocean floor mapping is done from what?
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ships
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An instrument that uses sound wave to locate objects in the water is what?
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sonar
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The gently sloping part of the continent covered by shallow ocean water is what?
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continental shelf
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The continental shelf is very important to what?
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industry
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Along the continental shelf the world's best what is done?
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fishing
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What is a brown seaweed rich in minerals?
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kelp
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Kelp is used in what types of things?
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ice cream, candy, jellies and salad
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What are found in certain rocks on the continental shelf?
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oil and natural gas
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What is the area that begins where the continental shelf suddenly drops?
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Continental slope
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Beyond the continental shelf, is the water shallow or deep?
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deep
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What are found on the slope and are steep sided?
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canyons
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Water over the slope is not only deep but cold and dark. Why?
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Light does not reach it.
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The bottom of the deep, open ocean is called what?
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plain
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The plain is flat and level. True or false?
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true
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The plain is covered with what?
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mud
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Why is the plain covered with mud?
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water depth, pressure and temperature
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Is there alot or few living things found along the plain?
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few
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Where are some of the largest mountain chains in the world found on the ocean?
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On the ocean bottom
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What areas are these mountains found called?
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rift zones
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The rift zones are systems of what in the ocean floor?
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cracks in the ocean floor through which magma rises.
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What rift system is formed in the Atlantic Ocean?
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Mid-Atlantic Ridges
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The Mid-Atlantic Ridges run from near Greenland to below the tip of what continent?
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Africa
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A few peaks of the Mid-Atlantic Ridges stick out of the water to form what?
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islands
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Special type of living things are found in spots along the rift zones. They live around openings in the rift zones called what?
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vents
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Unusual forms of what type of living things live in the warm water around vents?
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large worms, clams and crabs
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What microscopic life-forms do worms, clams and crabs eat?
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nutrients in the hot water
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What ocean has some of the deepest trenches in the ocean floor?
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Pacific Ocean
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What is a deep narrow valley in the ocean floor called?
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trench
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What do oceans have that are very important?
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natural recources
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What 2 things do people need from the ocean?
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food sources and minerals
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What 2 valuable resources are found on the ocean floor?
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oil and gas
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The ocean must be protected for the future? true or false
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true
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Do oceans have pollution problems? yes or no?
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yes
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What 2 main problems cause pollution in our oceans?
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waste water and oil spills
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What can everyone do to help the resources of our oceans?
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conserve
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How can pollution be controlled and stopped
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If people listen to laws and stop polluting!
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