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9 Cards in this Set
- Front
- Back
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what is the slant of the Earths axis ?
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23.5°
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what does it mean when the moon, sun, and earth are lined up?
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spring tide:full or new moon
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what does it mean when the earth, moon, and sun are not lined up?
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neap tide
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what are galaxies classified by?
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shape
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what galaxy shapes are there?
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-spiral
-irregular -elliptical |
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what is a spiral galaxy?
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bulge : old & young stars ; rotates slowly
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what is an irregular galaxy?
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made up of young stars
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what is an elliptical galaxy?
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usually largest ; very old stars : old & red
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what kind of galaxy are we in? && where are we located in our galaxy?
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spiral ; edge
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