Physics Crossword Competition

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Across
  1. 2. A cylindrical coil of wire that becomes electromagnetic when a current runs through it
  2. 3. angle the angle of incidence for a light ray, below which total internal reflection occurs.
  3. 4. change in momentum
  4. 7. a process that occurs at constant pressure
  5. 10. locations of maximum constructive interference on a standing wave
  6. 14. The unit of power for a converging lens:
  7. 15. An electrically neutral subatomic particle.
  8. 16. area of low pressure (expansion) in a longitudinal wave
  9. 17. The medium on which light waves were once presumed to propagate.
  10. 18. An elementary particle and a fundamental constituent of matter
Down
  1. 1. the bending or spreading of a wave when it passes through a small opening (aperture) or around a barrier
  2. 2. a quantity with magnitude only
  3. 3. top of a transverse wave
  4. 5. a discrete unit or package of light energy
  5. 6. a system property that expresses the degree of disorder in the system
  6. 8. An instrument that is used to measure current.
  7. 9. collection of neighboring points on a wave that are in phase
  8. 11. A is a semiconductor device used to amplify or switch electronic signals and electrical power.
  9. 12. a process that occurs without the transfer of thermal energy
  10. 13. A nuclear reaction in which two or more atomic nuclei join together