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10 Cards in this Set
- Front
- Back
How long does it take for the earth's rotation?
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24 hours
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How long does one revolution of the earth around the sun take?
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1 year or 365.25 days
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How does a solar eclipse occur?
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the moon must be directly between the earth and sun
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When are tides the highest?
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When the sun, earth, and moon are nearly in a line
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What force are all objects attracted to each other by?
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gravity
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What are the 2 factors that combine to keep earth and the moon in their orbits?
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gravity and inertia
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What is the tendency of a moving object to continue moving in a straight line or a stationary object to remain in place called?
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inertia
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Why can the moon be seen from earth?
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sunlight reflects off the moon's surface
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What are the round pits on the moon called?
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craters
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What are the 4 seasons?
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autumn (fall)
winter spring summer |