gravity

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Across
  1. 1. is the measure of the amount of matter in an object
  2. 2. the space in between objects
  3. 4. the ability to do work
  4. 6. its a force of attraction between objects due to their mass
  5. 9. force of gravity or the heaviness of a person or thing.
  6. 10. rate at which velocity changes with time
  7. 11. a push or pull
Down
  1. 1. a material substance
  2. 3. planets,stars,galaxies
  3. 5. when something travels around another object in space
  4. 7. space in between objects
  5. 8. a machine that floats around in space
  6. 11. fall when gravity is pulling it down and no other forces are acting on it