Physical Science

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Across
  1. 3. reduction of a items density.
  2. 6. high energy particles which cause ionization.
  3. 7. a part or aspect of something abstract matter
  4. 10. process by heat or electricity.
  5. 12. showing to become something in the future.
  6. 13. strength required for physical activity.
Down
  1. 1. produced by the motion of electric charge.
  2. 2. light or visible light.
  3. 4. physical action or movement.
  4. 5. when a surface moves on another and comes in contact.
  5. 8. the movement caused within a liquid.
  6. 9. a force that attracts the body to the center of the earth,
  7. 11. when a wave encounters a obstacle.