Solar System

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Across
  1. 3. Millions of small, rocky objects.
  2. 5. What do scientists use to measure Earth to the Sun?
  3. 6. What is the name of the smallest inner planet?
  4. 7. What is the name of the planets that are made of rock and metal?
  5. 8. What is the time it takes an an object to complete one rotation?
  6. 9. Made of gas,dust, and ice moves around the sun.
Down
  1. 1. What effect traps solar energy to increase the temperature of a planet?
  2. 2. What is the time it takes an object to travel once around the sun?
  3. 4. What is the name of the probe that explored Uranus?
  4. 7. What is the largest moon of Saturn?