Light and Sound Crossword Puzzle

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QUESTIONS LIST:

eardrum : the thin sheet of tissue that separates the middle and inner ear.
ossicles : the 3 bones in the ear
pinna : the outer ear that funnels sound into the ear
ultrasound : a sound that is above 20khz
echo : a reflected sound
vibrate : particle do this when a sound travels.
transverse : a wave where the oscillations are perpendicular to the direction of travel
longitudinal : a wave where the oscillations are parallel to the direction of travel
amplitude : the height of a wave
wavelength : the length of one complete wave
frequency : the number of complete waves per second
hertz : the unit of measurement for frequency
refraction : the bending of light when it enters a different medium
reflection : the "bouncing" of light when it hits a surface
luminous : the type of object that produces its own light
non luminous : the type of object that does not produce your own light.