CLMS Earth Science Unit 8 Review

How does upwelling decrease the populations of some organisms?

• Upwelling moves marine larvae away from their normal habitats

• Upwelling cools surface waters to dangerously low temperatures

• Upwelling causes algal blooms that deplete oxygen in coastal waters

• Upwelling brings in large fish populations and predators such as sea mammals

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

The Water Quality Act of 1987 required the development of standards that would prevent toxic pollutants from reaching dangerous levels in bodies of water. This act affected the amounts of toxic chemicals that could be discharged into bodies of water. Which of the following would have been most regulated by this Act?

• feed lots

• private homes

• paper mills

• grocery stores

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NGSS.MS-ESS3-4

Which of these describes the process that allows dissolved oxygen to collect in deep ocean water near the sea floor?

• Organic matter on the sea floor releases oxygen as it decays

• Deep sea organisms produce oxygen during photosynthesis

• Sinking cold water delivers oxygen from the surface

• Deep sea hydrothermal vents release oxygen

The ocean's surface is a more varied environment that its depths. Which two water-cycle processes cause the most variation in the ocean's surface salt concentration?

• transpiration & precipitation

• precipitation & evaporation

• evaporation & condensation

• condensation & transpiration

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NGSS.MS-ESS2-4

Variation in which property between water at different temperatures contributes most to the formation of horizontal ocean layers having distinct temperatures?

• density

• viscosity

• turbidity

• acidity

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NGSS.MS-ESS2-6

Which statement about the relationship between the ocean and atmosphere is most accurate?

• Ocean currents do not affect the atmosphere

• The atmosphere stores more heat than the ocean

• The ocean can hold heat more efficiently than the air

• Ocean currents can move faster than air or wind currents

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NGSS.MS-ESS2-6

Which two statements in the table are true about the changing salt concentrations of ocean water?

• 1 & 3

• 1 & 4

• 2 & 3

• 2 & 4

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NGSS.MS-ESS2-4

The global ocean temperature in 1912 was 15.8 degrees C, and in 2011 it was 16.5 degrees C. Corals are sensitive to the temperature of ocean water and their health will decline with increases in temperature. Which of these is a likely prediction based on the current trend in ocean temperature data?

• speciation of coral reefs

• bleaching of coral reefs

• accelerated growth of coral reefs

• enhanced fish predation on coral reefs

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NGSS.MS-LS2-4

Mixing of cold Arctic Ocean water with warm surface Atlantic currents off the northwestern coast of Europe causes which effect?

• sinking of water as it circulates southwest

• reversal of current direction back toward the European coast

• rise in water salinity & upwelling of affected currents

• rapid evaporation & acceleration of currents toward the pole

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NGSS.MS-ESS2-6

Some scientists predict that as greenhouse gases change the climate, the number and strength of hurricanes will increase. In order for this to occur, the climate change would have to affect Earth by changing the...

• depth of the ocean

• speed of currents in the oceans

• chemical compositions of the oceans

• amount of dissolved oxygen in the oceans

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NGSS.MS-ESS2-6