1. a measure of how long the wave is, taken from one wave to the same point on the next wave 2. the human perception of intensity.

3. a term related to frequency that increases as frequency increases.

4. A measure of the energy passing through an area in a set amount of time.

5. The number of waves per second

6. The matter a wave moves through.

7. The height of a crest, the depth of a trough, the density of a compression and/or the sparseness of a rarefaction.

a. Loudness b. Intensity c. Medium d. Amplitude e. Pitch f. Frequency g. Wavelength