Science Vocabulary

3. a disturbance that carries energy through matter or space
8. a sound or series of sounds caused by the reflection of sound waves from a surface back to the listener
9. material through which waves travel
10. to bounce off
11. waves that move the medium parallel to the direction in which the waves travel
13. the quality of a sound made by the number of vibrations (the highness or lowness of a sound)
15. the distance between two crests or troughs/ the distance between two corresponding parts of a wave
17. a wave that transfers energy perpendicular to its medium. The energy moves in one direction while the medium moves at a right angle to it
19. vibrations that travel through the air or another medium and can be heard when they reach a person’s or animal’s ear
20. the lowest point of a transverse wave
21. the highest point of a transverse wave

1. a wave that requires a medium in which to travel and carry energy
2. measure of wave energy; the distance between a wave’s resting point and the top or crest of a wave
4. a repeated back and forth or up and down motion
5. parts where the waves are close together
6. an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other
7. the change in direction of a wave due to a change in its medium
12. the location of objects by reflected sound, in particular that used by animals such as dolphins and bats
14. the apparent bending of waves around a small obstacle
16. parts where the waves are spread out
18. the ability to do work