Ocean Currents and Their Effects

What happened to the 28,000 rubber ducks that fell into the North Pacific Ocean in 1992?

• They all sank to the bottom of the ocean.

• They stayed together in one large group.

• They washed up on shores all over the world.

• They were quickly collected by a rescue team.

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NGSS.MS-ESS2-6

Which of these factors helps to drive ocean currents?

• The wind

• The tides

• Changes in water density

• All of the above

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NGSS.MS-ESS2-6

How does the shape of the ocean floor and the shoreline affect ocean currents?

• It makes currents disappear completely.

• It causes currents to speed up, slow down, or change direction.

• It makes the water much colder.

• It makes the water much warmer.

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NGSS.MS-ESS2-3

What are the two main types of ocean currents?

• Fast currents and slow currents

• Warm currents and cold currents

• Surface currents and deep ocean currents

• Big currents and small currents

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NGSS.MS-ESS2-6

What percentage of the ocean's water is moved by surface currents?

• 10%

• 50%

• 90%

• 100%

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NGSS.MS-ESS2-6

What two things mainly drive surface currents near the shore?

• Only the wind

• Only the tides

• Both the wind and the tides

• The movement of fish

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NGSS.MS-ESS2-6

What is the main force that creates surface currents in the open ocean?

• Tides

• Earth's rotation

• Wind

• Water density

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NGSS.MS-ESS2-6

What are the large loops formed by surface currents all over the Earth called?

• Whirlpools

• Eddies

• Gyres

• Waves

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NGSS.MS-ESS2-6

In which direction do gyres travel in the Northern Hemisphere?

• Clockwise

• Counter-clockwise

• Straight across the ocean

• Randomly

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NGSS.MS-ESS2-6

What is the name of the effect that causes air and water to be deflected (change direction) as the Earth spins?

• The Gravity Effect

• The Wind Effect

• The Coriolis Effect

• The Tide Effect

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NGSS.MS-ESS2-6