1
the distance between one crest of a wave and the next crest
2
the bouncing of light from a surface
3
the bending of light as it passes from one material into another
4
back-and-forth movement of matter
5
a measure of the amount of energy in a sound wave
6
the number of weaves produced in a unit of time
7
not letting light through
8
the loudness or softness of a sound
9
ability to cause change
10
a form of energy that travels through matter as waves
11
device that lets certain colors of light pass through while absorbing others
12
a piece of glass that brings together or spreads apart light rays passing through it
13
disturbance that carries energy and that travels away from its starting point
