Across
- 7. Device used to measure angles (10)
- 8. The maximum displacement from the resting point
- 11. Device used to observe a fluctuating signal on a screen (12)
- 13. The stuff through which a wave travels
- 16. The part of a longitudinal wave with particles most spread apart (11)
- 17. The change of speed of light due to change of medium, often causing direction change
- 19. A typical example of a longitudinal wave
- 20. The speed of a wave
- 21. A type of wave where displacement is perpendicular to wave motion
- 23. A wave bouncing off a boundary, eg mirror.
Down
- 1. The time for one complete wave to pass (4,6)
- 2. Device used to make a thin ray of light for experiments (3,3)
- 3. Energy that is not reflected or transmitted is __________ (8)
- 4. Incoming wave
- 5. Type of electromagnetic wave that is used in medical imaging of the skeletal system (4)
- 6. The number of waves passing a point per second
- 9. Type of earthquake wave that arrives first (1,4)
- 10. Xrays, UV and Gamma waves are dangerous because they are _____ (8)
- 12. The part of a longitudinal wave with particles closest together (11)
- 14. Type of EM wave used in communication (5)
- 15. Type of earthquake wave that arrives second (1,4)
- 17. Apparatus used to demonstrate waves in a lab (6,4)
- 18. Type of wave where displacement is parallel to the wave motion
- 22. The unit for frequency