Chapter 21 less 1-2 Crossword puzzel

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Across
  1. 4. What do you call millions of small rocky objects
  2. 5. What is made of gas, dust, and ice
  3. 7. What do you call the planets closet to the sun
  4. 9. What can you sue to measure the distance from earth to the sun
Down
  1. 1. What traps solar energy and causes the surface temperature to increase
  2. 2. what takes 24 hours
  3. 3. what takes 365 days
  4. 6. Biggest planet in the solar system
  5. 8. Jupiter, Saturn, Uranus, Neptune