Second Six Weeks Review - Chp 3 and 4 IPC

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Across
  1. 4. an example of this simple machine is a plastic bottle top
  2. 8. _____________ potential energy depends on mass and height; equals mass times 9.8 times height, OR equals weight times height (chp 4)
  3. 9. the gravitational force exerted on an object (chp 3)
  4. 11. device in a car that prevents you from going forward in a car crash (chp 3)
  5. 13. this force depends on the kinds of surfaces, and the forces pressing the surfaces together (chp 3)
  6. 16. device in a car that prevents your head from whipping backwards in a car crash (chp 3)
  7. 17. ________________energy depends on mass and speed; equals 1/2 times mass times velocity squared (chp 4)
  8. 18. an example of this simple machine is a ramp(chp 4)
  9. 20. ______________potential energy is energy that is stored by something that can stretch or compress (chp 4)
Down
  1. 1. Newton's _______________ states that mass times acceleration is equal to the force acting on the object (chp 3)
  2. 2. the amount of matter something has (chp 3)
  3. 3. the attractive force between any 2 objects; also depends on mass and distance (chp 3)
  4. 5. a friction-like force that opposes the motion of objects falling through the air (chp 3)
  5. 6. the property of an object to resist change (chp 3)
  6. 7. calculated by dividing energy by time (chp 4)
  7. 10. an example of this simple machine is a rake (chp 4)
  8. 12. Newton's _______________ states that for ever action force, there is an equal and opposite reaction force (chp 3)
  9. 13. a push or pull one body exerts on another (chp 3)
  10. 14. Newton's ________________ states that an object in motion will stay in motion, and an object at rest will stay at rest (chp 3)
  11. 15. _____________ energy is energy that is stored (chp 4)
  12. 19. an example of this simple machine is an axe (chp 4)