Unit 6 Waves

2. A material in which little if any radiant energy is allowed in the material it is either absorbed or reflected
5. This type of energy does not need a medium for travel, travels in all directions, and is organized by wavelength and frequency into the electromagnetic spectrum
7. Type of interference when wave pulses come together and combine to make one large amplitude
9. Causes a wave to travel parallel to the direction of the wave
11. The distance from any point on a wave to the same point on the next cycle of the wave
12. A type of mechanical wave and has a speed of 343 m/s
15. Physical system that has repeating cycles
16. Traveling oscillation that has frequency, wavelength and amplitude
17. Gradual loss of amplitude due to friction
18. Wave bends around or through the obstacle or through openings
19. Number of complete cycles per second (f), unit is Hz
21. The wave can pass straight into and through the obstacle, changing speed and bending through the new medium
22. These travel through a medium and require a connection, sound is an example of this
24. Time it takes to complete one cycle (T) unit: seconds
25. The distance from the center line to the top of a crest or the bottom of a trough (i.e., wave size)

1. A material in which some light is allowed to pass through
3. Process where the energy of a wave is transferred to a medium, converting the wave's energy into another form, often heat
4. Wave bounces off and goes in new direction- wavelength and frequency unchanged
6. These do NOT require a medium to travel, light is an example of this
8. Type of interference when wave pulses come together and make a smaller amplitude
10. Motion from one place to another with no repeating
13. The change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source
14. Causes a wave to travel perpendicular to the direction of the wave
20. Motion that repeats in cycles
23. A type of electromagnetic wave and travels at a speed of 3x108 m/s