Gravity

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Across
  1. 3. All objects in out solar system orbit the ______
  2. 5. The force that pulls an object towards the ground
  3. 6. What affects our tides?
  4. 8. The amount of matter an object is made of
  5. 9. The man who discovered gravity
Down
  1. 1. One of the things that formed earth was ______
  2. 2. Our galaxy is ____
  3. 4. The cloud of dust and gas where out solar system started
  4. 5. One of the things that formed earth was _____
  5. 7. What is it called what the Earth travels around the sun?