Means by which sound and light travel
waves
A wave vibrating at right angles to the direction of travel
Transverse
Part of a longitudinal wave where the wavelengths are the shortest
Compression
When light bounces off a surface
Reflection
Substance through which waves travel
Medium
The hightest point (peak) of a wave
Crest
The bending of light
refraction
Part of a longitudinal wave where the wavelengths are the longest
rarefraction
The lowest point of a wave
Trough
Measurement from one crest to the subsequent crest (or trough to trough), measured in hertz
Wavelength
A continuous, slight, shaking movement
Vibration
An object or substance that light can not travel through
opaque
Energy of the light is converted to different forms of internal energy
absorption
A wave that is an oscillation of matter, and therefore transfers energy through the matter
Mechanical
A wave of energy consisting of electric and magnetic fields, oscillating at right angles to each other
Electromagnetic
The distance on the wave that is measured from position of rest to the crest
Amplitude
Permitting light to pass through but diffusing it
Translucent
Permitting the uninterrupted passage of light
Transparent
The unit by which wavelengths are measured
Hertz
Waves that have vibrations along or parallel to their direction of travel
Longitudinal
The number of waves that pass a fixed point in a unit of time
Frequency