Physical Science Vocab.

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Across
  1. 1. The amount of matter in an object.
  2. 5. A group of two or more atoms joined together by chemical bonds.
  3. 6. A push or pull, or any action that involves the interaction of objects and has the ability to change motion.
  4. 7. Reflects or absorbs all light.
  5. 8. When a wave goes from one medium to another, changes speed, and bends.
  6. 11. The amount of space an object takes up.
  7. 12. The state in which the net force on an object is zero.
  8. 13. A force that resists motion.
  9. 15. A measure of the pulling force of gravity.
Down
  1. 2. The rate at which speed or velocity changes.
  2. 3. What is energy measured in?
  3. 4. Atoms of the same element that have different numbers of neutrons in the nucleus.
  4. 9. A variable that tells you direction as well as amount.
  5. 10. The bending of waves around the edge of an object.
  6. 14. The tendency of an object to resist a change in its motion.