Chapter 21 Lesson 1 & 2 Crossword Puzzle

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Across
  1. 4. 4 largest moons on Jupiter.
  2. 5. What is it called when an object make one complete rotation?
  3. 6. Made of gas, ice , and dust.
  4. 9. Biggest planet in the solar system.
  5. 10. Distance from earth and the sun.
Down
  1. 1. Planet with rings.
  2. 2. When an objects atmosphere traps solar energy.
  3. 3. The time it takes an object to make a complete revolution around the sun.
  4. 7. What are the inner planets called?
  5. 8. Small rocky objects.