1. Parts of a Wave

2. Crest Point of maximum displacement trough crest

3. Trough Point of minimum displacement trough crest

4. Amplitude Greatest distance from natural resting position NOT vertical distance from crest to trough amplitude trough crest

5. Wavelength Distance between two equivalent parts of the wave Units: m Symbol: λ (lambda) or Crests

6. Period Time required for one full λ to pass a given point Units: seconds Symbol: T

7. Frequency Number of λ that pass a certain point during a given time interval. Units: hertz (Hz), or 1/s (cycles per second) Symbol: f or Crests

8. On a longitudinal wave Compression: particles are closest together Rarefraction: particles are spread farthest apart compressionrarefaction