Physics Crossword 16

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Across
  1. 4. unit of electrical charge (7)
  2. 5. bending of light as is passes through one medium to another (10)
  3. 8. contact force that opposes motion (8)
  4. 10. the amount of space an object occupies (6)
  5. 11. when a solid becomes a gas (without becoming a liquid in between) (11)
  6. 15. (v – u) / t (12)
  7. 18. type of potential energy that an object held up high would have (13)
  8. 20. c is the speed of light in a ____ (6)
  9. 21. type of wave where particle movement and wave propagation are perpendicular (10)
  10. 22. the amount of matter in an object (4)
Down
  1. 1. colour of light that contains all colours in the visible spectrum (5)
  2. 2. Joules per second (4)
  3. 3. one of the fundamental forces (15)
  4. 6. phenomenon that occurs when a wave bounces off a surface (10)
  5. 7. effect where the frequency of a wave changes due to the source or observer moving (7)
  6. 9. property of matter that resists changes in motion (7)
  7. 12. another word for “vibrates” (10)
  8. 13. type of energy an object has due to motion (7)
  9. 14. type of energy stored in the nucleus of an atom (7)
  10. 16. the number of waves that pass a fixed point per unit of time (9)
  11. 17. lens type that is thicker at the centre (6)
  12. 18. EM radiation with the highest energy (5)
  13. 19. SI unit of electrical resistance (3)