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Science Ch. 17
Vocab. for science chapter
| Question | Answer |
|---|---|
| solar system | The sun, its eight planets, dwarf planets, moons, asteroids, and comets. |
| revolution | a full orbit around another object |
| axis | an imaginary center line |
| rotation | one whole spin of an object |
| space probe | spacecraft that gather data without a crew |
| comet | a frozen mass of different tyes of ice and dust orbiting the sun |
| asteroid | a rocky mass up to several hundred kilometers wide that revolves around the sun |
| satellite | a moon, rock, or anything that orbits another object |
| moon phases | the shapes of the lit side of the moon we can see |