2nd Nine Weeks Puzzle

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Across
  1. 3. the speed and direction of a moving object
  2. 4. plates collide
  3. 5. the amount of matter in an object
  4. 7. plates grind past each other
  5. 10. forces acting on an object that combine and form a net force that is not zero
  6. 12. the combination of all forces acting on an object
  7. 13. the tendency of an object to resist a change in its motion
  8. 14. an attractive force that exists between all objects that have mass
  9. 15. a contact force that resists the sliding motion on two surfaces that are touching
Down
  1. 1. the measure of the change in velocity during a period of time
  2. 2. the distance an object moves divided by the time it takes to move that distance
  3. 6. it is a convergent boundary, and an oceanic plate is pushed under the continental plate
  4. 8. the movement of an object along a path
  5. 9. forces acting on an object that combine and form a net force of zero (do not cause a change in motion)
  6. 11. areas where plates move away from each other, forming either mid oceanic ridges or rift valleys
  7. 15. a push or pull