Physics Crossword Puzzle

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Across
  1. 4. Effect           The process of light knocking electrons off a metal surface.
  2. 6. Current           The flow of electric charge through a conductor.
  3. 9. The process of an electron moving to a higher energy level.
  4. 13. The force exerted on an object due to gravity.
  5. 16. The tendency of objects to resist changes in their state of motion.
  6. 18. The change in light's direction when it changes speed in a new medium.
  7. 19. Energy           Energy stored in an object due to its position or state.
Down
  1. 1. The region around a nucleus where an electron is likely to be found.
  2. 2. The rate at which an object covers distance.
  3. 3. Spectrum           The unique set of light lines emitted or absorbed by an element.
  4. 5. Wave           A wave that requires a physical medium to travel through.
  5. 7. The average kinetic energy of the particles in a substance.
  6. 8. The measure of opposition to electrical current flow.
  7. 10. A measure of the force that causes an object to rotate.
  8. 11. The pattern formed when two or more waves overlap.
  9. 12. The distance a wave travels during one full vibration.
  10. 14. Principle           The rule that pressure applied to a fluid is transmitted equally everywhere.
  11. 15. The concept that energy exists in discrete, specific values.
  12. 17. A form of electromagnetic radiation perceived by the human eye.
  13. 19. The time required for one complete cycle of a repeating event.