Science!!!

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Across
  1. 3. How hard it is to stop something
  2. 5. To find out about something
  3. 6. Something that might happen
  4. 8. How heavy you are sort
  5. 10. The thing you jump out of a plate with
  6. 11. Movement
  7. 13. The ability to move things
Down
  1. 1. Two things running into each other
  2. 2. A thing you jump on
  3. 4. A test to see if something is true
  4. 7. A bouncy thing
  5. 9. How fast your are going
  6. 12. Something still/moving wants to stay still/moving