physics 1

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Across
  1. 3. heat required to raise a gram of water by 1ºC.
  2. 6. a physical quantity expressing the amount of matter in a body
  3. 7. region containing no matter
  4. 8. the process by which warm air rises
  5. 9. repetition in a specified time
  6. 12. wavelengths shorter than light
  7. 13. resistance between two bodies
  8. 15. having a longer waveform than light
  9. 16. a flow of electrical charge
  10. 18. the tendency of a body to maintain uniform motion unless acted upon by an external force
  11. 19. the rate of change of position in one direction with time
Down
  1. 1. an influence that changes a body's rate of motion
  2. 2. splitting an atomic nucleus
  3. 4. a device to diverge or converge a beam
  4. 5. the emission or transfer of radiant energy as particles
  5. 8. a material electricity can pass through
  6. 10. distribution of colours when white light is dispersed
  7. 11. the compactness of a substance
  8. 14. force of attraction
  9. 17. energy bouncing of substance