Gravity

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Across
  1. 3. The force that pulls objects to other objects
  2. 5. the scientist who suggested there was gravity
  3. 6. how much gravitational pull is on an object
  4. 7. how much matter the object is made of
  5. 9. is a cloud and dust cloud that formed our solar system
Down
  1. 1. was a scientist who dropped objects at the same time off of the leaning tower of Pisa
  2. 2. is the third planet in our solar system
  3. 4. the governing force in the solar system
  4. 7. it orbits the Earth
  5. 8. The star at the center of our solar system