Physical science 9

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Across
  1. 4. point The temperature at which solid changes to a liquid
  2. 9. point The temperature at which a liquid
  3. 10. When a substance changes from gas to solid
  4. 11. Distance from the midpoint to the height of a crest
  5. 14. Speed and direction
  6. 15. A negative ion
  7. 16. A positive ion
  8. 17. Anything that causes an object to move
Down
  1. 1. Particles change from liquid to gas
  2. 2. When waves bounce off a Surface
  3. 3. a gas
  4. 5. Newtons first law
  5. 6. When a substance changes from from a solid directly to a gas
  6. 7. fields Area around a magnet where the force of magnetism can be felt
  7. 8. point The temperature at which liquid changes to a solid
  8. 12. A force that can attract t or repel certain materials
  9. 13. When Particles change from a liquid to a gas below the boiling point; Occurs when high energy particles near the surface break bonds and become a gas b