Across
- 2. Force x perpendicular distance to the pivot
- 7. The spreading of a wave when it passes through a gap or around a corner
- 8. This constant is the gradient of an energy frequency graph for an EM wave
- 9. A force which opposes motion
- 10. When a photon of UV light is incident on a metal an electron is released
- 11. This pattern is produced due to electrons moving between energy levels in atoms
- 15. The difference in distance travelled by two waves to reach the same point
- 17. A transverse wave with vibrations in only one plane
- 18. A wave with displacement of particles perpendicular to the direction of motion
- 21. The phenomena observed when two waves which are in phase meet
- 24. This type of wave is formed when a wave reflects off of a surface and interferes with itself
- 25. This is the minimum energy required to liberate an electron from a metal
- 26. A region of constructive interference on a standing wave
- 27. A wave with displacement of particles parallel to the direction of motion
Down
- 1. The distance from the midpoint of a wave to the trough
- 3. The sum of two or more vectors
- 4. This type of wave is transverse and travels at the speed of light
- 5. The vector sum of the amplitude of two waves
- 6. For example 5m North
- 9. The phenomena observed when two waves which are out of phase meet
- 12. A quantum of light energy
- 13. The prefix x10^6
- 14. The number of waves per second
- 16. A quantity with both magnitude and direction
- 17. The time for one complete wave
- 19. Light of a single wavelength or colour
- 20. The bending of a wave when it travels between two different mediums
- 22. This is the minimum frequency required to liberate an electron from a metal
- 23. A region of destructive interference on a standing wave
- 28. The force required to accelerate 1kg by 1m/s2