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5 Cards in this Set
- Front
- Back
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what causes the sun to appear to rise and set in the sky |
the earths rotation causes the sun to rise and set in the sky |
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why do the positions of stars seem to change as seasons change |
the positions change due to earths movement |
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if you tie a string to a rock and spin the rock in a circle, you are modeling the orbit of earth the rock around the sun your hand. what would happen if the string were only half as long and still being turned with the same force,as shown in the picture above? |
it would cause the days to be shorter |
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why does the moon seem to have different shapes, or phases? |
the moon has different shapes or phases as it revolves around the earth |
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compare how earth rotates with how it revolves |
Earth takes 24 hours to rotate on its axis. it takes 365days to revolve around the sun |
