Chapter 19 Ocean Water Test Review

Most oxygen enters the ocean from

• underwater volcanoes.

• streams and rivers.

• the atmosphere.

• sea life.

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Gases dissolve most easily in

• shallow ocean water.

• salty ocean water.

• warm ocean water.

• cold ocean water.

Ocean water temperature depends on the solar energy an area receives and the water’s

• movement.

• organisms.

• salinity.

• mineral content.

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NGSS.MS-ESS2-6

As ocean water becomes colder, it also becomes

• saltier.

• denser.

• clearer.

• lighter.

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Two factors that affect the salinity of ocean water are

• energy and light.

• density and conductivity.

• temperature and chemicals.

• precipitation and evaporation.

Cold ocean water sinks and moves through the

• ocean’s thermocline.

• ocean basins.

• polar regions.

• icebergs.

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NGSS.MS-ESS2-6

Marine organisms help balance the chemistry of ocean water by removing nutrients and gases and

• altering the water temperature.

• consuming harmful bacteria.

• returning other nutrients and gases to the water.

• balancing the color of ocean water.

Which of the following is called the "foundation of life" in the ocean?

• whales

• minerals

• salt

• plankton

Nutrients in ocean water are stored

• near the surface.

• at the tropics.

• at the polar regions.

• in deep water.

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Which of the following live in the pelagic zone?

• sponges

• worms

• marine mammals

• sea lilies