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