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| the two factors that affect gravity |
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| the tendency of an object to resist a change in its motion |
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| the cyclic rise and fall of ocean water levels |
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| side of the Earth facing the moon and the side of the Earth opposite the moon |
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| about 12 hours (actually 12 hours and 25 minutes) |
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| when high tides are higher than normal and low tides are lower than normal (greatest difference between high and low tides) |
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| when high tides are lower than normal and low tides are higher than normal (least difference between high and low tides) |
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| object that has the greatest influence on Earth's tides |
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| moon movement that high tides follow |
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| Earth movement that causes a particular coastal location to move into and out of high and low tides |
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| 1st quarter and 3rd quarter |
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| moon phases associated with neap tides |
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| moon phases associated with spring tides |
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| configuration of Earth, moon, and sun during neap tides |
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| 180 degrees (straight angle) |
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| configuration of Earth, moon, and sun during spring tides |
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