Waves Extra Credit Crossword

2. when a wave strikes an object and goes into it.
4. given off by the sun and used to kill bacteria, and by the body to make vitamin D.
6. when two or more waves combine to form a new wave.
9. used for cooking, Doppler radar, cell phones, and GPS.
10. when an object causes a wave to change direction and bend around it.
12. the distance between one point on a wave and the nearest point just like it.
13. used in night vision goggles, remote controls, and infrared photography.
14. when a wave strikes an object and bounces off of it.
17. used to kill cancer cells, sterilize medical equipment and in radioactive tracers.
18. the number of waves that pass a given point in one second.

1. the amount of time it takes one wavelength to pass a point.
2. the amount of energy carried by a wave.
3. the only electromagnetic waves we can see; given off by the sun and light bulbs.
5. matter in the medium moves back and forth in the same direction (parallel) as the wave’s motion.
7. the bending of waves caused by a change in its speed as it moves from one medium through another.
8. matter in the medium moves back and forth perpendicular to the wave’s motion.
11. used to take pictures of bones to check for breaks and fractures, also used in CAT scans.
15. the entire range of frequencies of electromagnetic radiation.
16. emitted by radio stations, MRI’s, RADAR, Wi-Fi, and TV.