science

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Across
  1. 2. weight
  2. 5. what do you do when you speed a car?
  3. 10. to come in touch
  4. 11. when two things rub together
  5. 12. the energy that is stored in an object
  6. 15. the top of something
  7. 16. a force that acts between moving surfaces
  8. 18. the great size of something
Down
  1. 1. a set of criteria
  2. 3. how heavy something is
  3. 4. a force that acts between moving surfaces
  4. 6. regular path
  5. 7. swiftness
  6. 8. what's around you?
  7. 9. to do successfully
  8. 11. to make something happen
  9. 13. a planet containing humans
  10. 14. how fast something is going
  11. 17. Laws made by newton