waves

4. wave that consists on oscillations occurring perpendicular
6. when 2 or more waves come together
7. these waves require a medium
9. bottom of the wave
10. distance from the rest position to the crest position
12. involves a change in the direction of waves as they pass from from one medium to another
13. occurs at any location along the medium where two interfering waves have displacement in the opposite direction
15. how long or how short the period is mesured in hertz
17. wave that travels along a medium as crest and trough

1. 2 waves added together
2. when a wave hits an object and bonces off
3. top of the wave
5. change in frequency of a wave
8. waves which can travel through the vacuum of outer space
11. full cycle of a wave
13. change in direction of waves as they pass thorugh an opening or around a barrier
14. where some of the parts of the wave remain fixed and others vibrate
16. what the wave travels in