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Ch. 4 Earth and Sun
| Question | Answer |
|---|---|
| A rocky mass up to several hundred kilometers wide that revolves around the sun. | Asteroid |
| An imaginary line around which objects spin. | Axis |
| A frozen mass of different types of ice and dust orbiting the sun. | Comet |
| A group of stars that forms a pattern. | Constellation |
| A large, round object that revolves around the sun but has not cleared the region around its orbit. | Dwarf Planet |
| Any of the four closest planets to the sun. (Mercury, Venus, Earth, Mars) | Inner Planets |
| A natural object that revolves around a planet. | Moon |
| The path an object takes as it revolves around a star, planet, or moon. | Orbit |
| Any of the four planets in our solar system beyond Mars. (Jupiter, Saturn, Uranu, and Neptune) | Outer Planets |
| A large, round object that revolves around a star and has cleared its orbit. | Planet |
| One full orbit around the sun. | Revolution |
| One whole spin of an object on its axis. | Rotation |
| An explosive eruption of waves and particles into space. | Solar Flare |
| A spacecraft that gathers data without a crew. | Space Probe |