World of Physics

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Across
  1. 2. A measure of the amount of matter in a body
  2. 3. a measure of an object's resistance to motion
  3. 7. A negatively-charged sub-atomic particle
  4. 9. a quantity without direction
  5. 10. A measure of the disorder
  6. 12. a particle of light
  7. 13. Unit of electric current
Down
  1. 1. The maximum displacement of particles of the medium from their mean positions
  2. 4. the tight cluster of nucleons at the center of an atom
  3. 5. The rate of change of velocity in a given time
  4. 6. The mass of an object divided by its volume
  5. 8. a quantity with direction
  6. 11. The basic building block of all normal matter