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Wave
Any disturbance in a solid liquid or gas that transmits energy
Waves can do work, but they only transfer
Energy not matter
Electromagnetic waves
Can travel through a vacuum or empty space
Transfer waves
Particles in the wave vibrate up and down
Crest
Highest point of a transverse wave
Trough
Lowest point of a transverse wave
Longitudinal waves
Particles in the wave vibrate, back-and-forth or side to side
Compression
Where the particles in a longitude wave are crowded together
Rare fraction
Where the particles in the longitudinal wave are spread apart
Amplitude
The height of the wave
Frequency
The number of waves that pass in a given amount of time
Speed
How fast the wave travels through a medium
Wavelength
The distance from one point on a wave to the identical point on the next wave
wave interactions
Reflection bouncing off and rafraction bending
Two categories of light waves
Transfers and electromagnetic
Two categories of sound waves
Longitudinal and mechanical
Sound is caused by
Vibrations, rapid back-and-forth motions
Sound travels quickest through which type of
Media solid because molecules are closer together and Temperature warmer because molecules move faster
Pitch
How high or low a sound is pitch depends on the waves frequency
Loudness
How soft or loud a sound is also referred to as volume
Sound is measured in
Decibels
Refraction
The bending of light waves through different media
Reflection
When the light or sound waves bounce off an object
Echo
A reflected sound wave a sound echoes off a smooth and hard surface
Empty space is called a
Vacuum