Science Chapter 4: Solar System

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Across
  1. 2. a large, round object that revolves around a star and has cleared the region around its orbit
  2. 6. an explosive eruption of waves and particles from the sun into space
  3. 7. the four closest planets to the sun - Mercury, Venus, Earth, and Mars
  4. 8. the path an object takes as it revolves around a star, planet, or moon
  5. 12. one full orbit around the sun
  6. 13. a gigantic sphere made of very hot gas
  7. 14. has the same characteristics as a planet, but has NOT cleared the region around its orbit (Pluto is one)
Down
  1. 1. the gas giants - Jupiter, Saturn, Uranus, Neptune
  2. 3. a piece of rock that enters the earth's atmosphere and burns, appearing as a streak of light.
  3. 4. a spacecraft that gathers data without a crew
  4. 5. a natural object that revolves around a planet
  5. 9. a rocky mass up to several hundred kilometers wide that revolves around the sun
  6. 10. a frozen mass of different types of ice and dust orbiting the sun
  7. 11. a group of stars that forms a pattern
  8. 12. one whole spin of an object on its axis
  9. 15. an imaginary line around which an object spins