Vocabulary units 1-3

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Across
  1. 2. What can rain cause?
  2. 4. Is an unhealthful food that is high in calories
  3. 5. Which is the third planet from the sun ?
  4. 7. A scietist who studies the stars
  5. 8. Gases ejected from an engine as waste products
  6. 9. You can see the stars with this
Down
  1. 1. Saturn and Mars are two of these.
  2. 3. When your tooth hurts it's called?
  3. 5. When your ear hurts it's called?
  4. 6. It's a group of stars