Solve these clues to fill the grid.
- The color of snow
- 7 Across
- Polished surface that forms images by reflecting light
- 8 Across
- The particular auditory effect produced by a given cause
- 9 Across
- The change in direction of a propagating wave when passing from one medium to another
- 10 Across
- The property of sound that varies with variation in the frequency of vibration
- 13 Across
- State of matter with a fixed shape
- 14 Across
- A primary subtractive color for light
- 15 Across
- The number of occurrences within a given time period
- 1 Down
- The maximum displacement of a periodic wave
- 2 Down
- Softly bright or radiant
- 3 Down
- A regular periodic variation in value about a mean
- 4 Down
- A polyhedron with two congruent and parallel faces and whose lateral faces are parallelograms
- 5 Down
- The membrane in the ear that vibrates to sound
- 6 Down
- A movement like that of a sudden occurrence or increase in a specified phenomenon
- 7 Down
- What lets us see; the opposite of dark
- 11 Down
- The color of coal
- 12 Down