Tides Review 6.9B

One rotation of Earth is equal to

• a day.
• a year.

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Why do globes lean sideways?

• To allow them to spin easier.
• To demonstrate the tilt of Earth's axis.
• To demonstrate the effects of gravity.
• To demonstrate day and night.

Which body has the greater effect on Earth's tides?

• Sun
• Saturn
• Moon 
• Venus

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Wha type of tide would this arrangement of earth-moon-sun create?

• full moon tide

• new moon tide

• neap tide

• spring tide

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What type of tides would this arrangement of earth-moon-sun create?

• neap tide
• spring tide
• new moon tide
• full moon tide

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Tides are caused by

• strong winds that blow over ocean waters.
• the interaction of Earth, the moon and the sun.
• the shifting of the plates on the ocean floor.
• variations in the salinity of ocean water

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What causes tides?

• gravity
• wind
• spring
• neap

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If tides alternate from high to low and there are two of each type of tide a day, about how many hours will generally be between each different tide?

• 2 hours
• 6 hours
• 12 hours
• 24 hours

How many low tides and high tides happen in a day?

• 1 low tide, 1 high tide
• 4 low tides, 4 high tides
• 3 low tides, 3 high tides
• 2 low tides, 2 high tides

The bulge of water on the side of the Earth closest to the moon produces ___________.

• high tide
• low tide
• neap tide
• spring tide

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