Physics

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Across
  1. 4. Change in direction of a wave when it enters a different medium
  2. 6. Speed in a particular direction
  3. 8. Mass per unit volume
  4. 9. Force acting per unit area
  5. 10. A push or pull that can change an object's motion
  6. 11. The product of an object's mass and velocity
Down
  1. 1. Number of waves passing a point per second
  2. 2. Force that opposes motion between surfaces
  3. 3. Force that attracts objects towards each other
  4. 5. Rate of change of velocity
  5. 7. A complete path through which electric current can flow