True or False: An eddy is a circular current of water that runs in the opposite direction of the larger current.
True
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25
Name one thing that causes currents deep underwater?
Changes in the temperatures and salinity of the water
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20
What happens to warm air and warm water?
They both rise
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25
What is upwelling?
Currents flow upward to the surface and bring important nutrients needed to sustain life.
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15
A giant rotating pattern of currents in the ocean is a called _________.
Gyres
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10
True or False: Salinity is the amount of pepper in water.
False
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20
What causes tides?
Tides are caused by the gravitational pull of the sun and moon on Earth's seawater.
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15
Name one way trash gets into the ocean
1. Dumped overboard from passing ships 2. Sewage and other hazardous waste is dropped from cruise ships 3. Trash is carried down rivers into the ocean
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thief
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rocket
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rocket
Go to first place!
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lifesaver
Give 10 points!
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10
True or False: When two currents come together in a narrow area, such as between two islands, the currents can speed up. This spinning pool of water is a whirlpool.
True
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25
How are surface currents formed?
When wind blows over the surface of the ocean, it pushes against the water and creates currents.
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heart
Other team wins 15 points!
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seesaw
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fairy
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lifesaver
Give 5 points!
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trap
No points!
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gold
Win 50 points!
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shark
Other team loses 10 points!
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baam
Lose 20 points!
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20
Name a gyre teeming with animal life.
Sargasso Sea in the North Atlantic Gyre
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15
Like whirlpools, the water in eddies moves with great __________________.
