Chapter 21 Lesson 1-2 Crossword Puzzle

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Across
  1. 2. Is this a deep hole in a planet?
  2. 3. Am apart of this solar system?
  3. 4. probe Does this object just explore the terrestrial planets or go further out?
  4. 8. Do we use this to measure objects on Earth?
  5. 9. effect Is it hot or is it just me?
Down
  1. 1. Since I am a planet am I close to the sun?
  2. 5. of rotation Is this time all day?
  3. 6. Do these things have to deal with an belt?
  4. 7. You might see this glow once in a while