5 SCIENCE Chapter 11 vocab
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13 terms
Terms | Definitions |
|---|---|
 axis | an imaginary line around which an object spins |
| revolution | one full orbit around the sun |
| rotation | one whole spin of an object on its axis |
| solar flare | an explosive eruption of waves and particles into space |
| orbit | the path an object takes as it revolves around a star, planet, or moon |
| planet | a large, round object that revolves around a star and has cleared the region around its orbit |
| inner planet | any of the four closest planets to the sun |
| space probe | a spacecraft that gathers data without a crew |
| moon | a natural object that revolves around a planet |
| outer planet | any of the four planets in our solar system beyond Mars |
| asteroid | a rocky mass up to several hundred kilometers wide that revolves around the sun |
| comet | a frozen mass of different types of ice and dust orbiting the sun |
| dwarf planet | a large, round object that revolves around the sun but has not cleared the region around its orbit |
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