Chapter 21 Lesson 1-2 Crossword Puzzle

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Across
  1. 3. The only planet that can support life is called ?
  2. 4. What does scientist use to measure distance from Earth to the Sun ?
  3. 6. When Earths revolution takes a year it is called ?
  4. 8. What is a small rocky object that orbits the sun in the asteroid belt between the orbits of Mars and Jupiter ?
  5. 9. What is the smallest planet and is closest to the Sun ?
  6. 10. What is the only planet that has a reddish color ?
Down
  1. 1. The 2nd planet from the Sun is called ?
  2. 2. When a planet takes 24 hours to rotate its called ?
  3. 5. The planets that are closer to the Sun are called ?
  4. 7. What are objects that orbit the Sun and has a nearly spherical shape ?