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Java Games: Flashcards, matching, concentration, and word search. |
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The Earth's Moon
Chapter 3 review
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| A | B |
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| gravity of the moon | less than 1/6 of the earth |
| moon rocks | about same age as the earth, no water |
| weather | no atmosphere=no weather, dry airless, barren, extreme temp 100 to 175 |
| features | highlands with most craters, |
| maria | lowland plains |
| rilles | long valleys |
| craters | cold and inactive |
| perigree | point at which moon's orbit is closest to the Earth |
| apogee | farthest from the Earth, |
| moon's movement | moves eastward, same amount of time to rotate on its axis and to revolve around the Earth |
| origin theory #1 | formed away from earth and captured by earth's gravity |
| origin #2 | formed from same cloud as sun, Earth, etc. |
| origin#3 | formed when a giant asteroid struck Earth tearing a chunk out of the Earth (Pacific Ocean) |
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