Waves

2. the distance from a point on one wave to the same point on the next way.
3. maximum displacement of a point on a wave away from the middle line
6. the area of a longitudinal wave where the particles are far apart.
8. the region of the electromagnetic spectrum used to kill cancer cells
11. the unit of measurement for the time period of a wave
13. when a wave changes direction as it moves from one material to another.
15. a wave can be investigated using a _______ tank.
16. the vibrations of the wave are at a right angle to the direction of energy transfer
17. the region of the electromagnetic spectrum that is detected by the eye
18. the vibrations of the wave are parallel to the direction of the wave
19. the units for frequency

1. the time to complete one wavelength
4. unit for wavelength
5. when a sound wave is reflected this is called an_____
7. the area of a longitudinal wave where the particles are close together
9. an example of a longitudinal wave
10. the region of the electromagnetic spectrum used to detect broken bones
12. the region of the electromagnetic spectrum used to send messages between mobile phones and cook food
14. the number of complete waves passing a point in 1 second.
15. when a wave bounces off an object it is said to have _________