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Science chapter 1
lesson 6
Term | Definition |
---|---|
What is the moon like ? | dry, airless, has an irregular surface, small compared to earth, has large variations in its surface temperature |
Maria | dark, flat areas that are hardened rock formed from huge lava flows that occurred 3-4 billion yrs ago |
Craters | large pits that can be hundreds of kilometers across, caused by meteoroids |
Highlands | mountians that are light-colored on the moon's surface, cover most of the moon's surface |
Moons Diameter | 3,476 kilometers across, 1/4 of Earth's diameter |
Moons Mass | 1/8 of Earth's mass |
Moons Gravity | 1/6 of Earth's gravity |
Moons Temperature | ranges from 130c to -170c , they very because the moon has no atmosphere |
Collision-ring Theory | the theory of how the noon was formed |
Average Density | the moon and earth are very similar |