Planets Review

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Across
  1. 2. The sun is a medium-sized _____ star.
  2. 5. There are __ planets in our solar system.
  3. 7. The most massive object in our solar system that takes up about 99.9% of the mass.
  4. 8. The little red planet and Earth's closest neighbor.
  5. 10. The closest planet to the sun and the smallest planet.
  6. 14. The 1st four planets are called the ______ planets, because they are closest.
  7. 15. The last 4 planets are called _______ planets.
  8. 16. To get to Jupiter you must cross the ________ belt
  9. 18. The hottest planet in our solar system mostly made of metal.
Down
  1. 1. Earth is in the ______ zone.
  2. 3. The 3rd planet from the sun.
  3. 4. This planets takes the longest to go around the sun, because it is farthest away.
  4. 6. This planet has the most beautiful giant rings.
  5. 9. The largest planet with the most moons.
  6. 11. How many planets have rings?
  7. 12. What prefix means sun?
  8. 13. One of the Ice giants that spins on its side.
  9. 17. What prefix means Earth?