Solar System Review

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Across
  1. 4. distance from the sun to the earth, or about 150,000,000 km
  2. 10. the force that keeps all the planets in orbit around the sun
  3. 11. small, mostly rocky or metallic body that orbits the sun in the inner solar system
  4. 12. the region beyond Neptune's orbit extending 30 to 50 AU from the sun
  5. 13. the largest PLANET in our solar system
Down
  1. 1. the most vital ingredient for life
  2. 2. a loose ball of ice and rock that usually has a long, narrow orbit around the sun
  3. 3. the tendency of an object in motion to resist a change in motion unless acted upon a force
  4. 5. the largest OBJECT in our solar system
  5. 6. the most distant part of our solar system
  6. 7. the area in which water can exist as a liquid on the surface of a planet like Earth
  7. 8. an object that orbits the sun, rounded by gravity, has cleared area of its orbit
  8. 9. when a meteoroid enters Earth's atmosphere in a streak of light, it is called a _____.