Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What is a tide?
a. | the point at which waves break on shore | c. | the amount of water that seeps into
the sand | b. | the daily rise and fall of ocean water levels |
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2.
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What causes the Corriolis effect?
a. | the wind | c. | the Earth’s rotation | b. | the global conveyor
belt |
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3.
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How deep do surface currents extend?
a. | all the way to the ocean floor | c. | one hundred to two hundred
meters | b. | one or two kilometers |
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4.
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The Gulf Stream delivers warm water to what region?
a. | Hawaii | c. | Western Europe | b. | the East Coast of North
America |
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5.
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What is the main force that drives surface currents?
a. | the wind | c. | the Moon | b. | geothermal
energy |
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6.
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What is a gyre?
a. | a kind of wind that blows all the time | c. | a large circular surface
current | b. | a slow-moving current several kilometers deep |
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7.
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How many high tides happen to the same spot each day?
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8.
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If the Sun is bigger than the Moon, why does the Moon have a greater effect on
the tides?
a. | the Moon is actually almost as big as the Sun | c. | the Moon is much closer than the
Sun | b. | the Sun’s gravity does not affect water |
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9.
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What causes the tides?
a. | the pull of gravity between the Earth, Moon, and the Sun | c. | coriolis
effect | b. | wind |
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10.
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What do you call the distance between two wave crests?
a. | amplitude | c. | frequency | b. | wavelength |
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