da science M3-L1

2. Waves are measured from one crest to the next and from trough to the next.
3. Wave-A mechanical wave is a wave that travels only through matter.
5. sections where the particles in the medium are closest together are compressions.
7. -The frequency of a wave is the number of times the pattern repeats in a given time.
8. substance that makes possible the transfer of energy from one location to another.
9. Wave- A longitudinal wave that can travel only through matter.
10. of the wave.
14. waves are measured from one compression to the next compression or from one rarefaction to the next rarefaction.
17. Bottom of the wave.
19. distance between one point on a wave to the same point on the next wave.
20. vibration is a back-and-forth or an up-and-down movement of an object.

1. - The regions where the particles are farthest apart are rarefactions.
3. A straight line at an angle of 90 degrees to a given line to a plane or surface.
4. above 20,000 Hz are called ultrasound.
6. decreases as distance increases.
10. The amount of sound energy that passes through a square meter of space in one second.
11. perception of how high or low a sound seems is the pitch.
12. by side and having the same distance continuously between them.
13. wave is a disturbance that transfers energy from one place to another without transferring matter. All waves have an energy source. Waves transfer energy away from the source of the energy.
15. space entirely devoid of matter.
16. a wave is the maximum distance that the wave moves from it's rest position.
18. Wave-Seismic waves are mechanical waves because they move through matter.