Physical World

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Across
  1. 3. The force of two objects rubbing against each other
  2. 6. Something used to reduce friction
  3. 9. The amount of something
  4. 10. Something used to measure force
  5. 12. Contact is the reason for the force
  6. 14. A steady speed of a falling object
  7. 16. Something that changes motion
Down
  1. 1. The force that keeps us on the ground
  2. 2. The force pushing things up in water
  3. 4. The friction between two surfaces
  4. 5. Many changes in motion
  5. 7. No change in motion
  6. 8. How heavy an object is
  7. 11. Things speeding up
  8. 13. A force that is non-contact
  9. 15. The unit of measurement for force