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# chapter 20jg

### chapter 20 notes

Wave any disturbance that transmits energy through matter or space
Medium is a substance through which a wave can travel
Energy transfers through a medium by vibrations of particles
Sound waves travels by the vibrations of particles in liquids, solids, and gases. If there isn’t particles to vibrate no sound is made
Ocean waves are waves that travel through water
Electromagnetic waves are waves that don’t require a medium
Electromagnetic waves examples visible light, TV signals, radio signals, x-rays, and microwave ovens
Classifying waves based on the direction in which that particles of the medium vibrate compared with the direction in which the wave travels
Transverse waves waves in which the particles vibrate in up-and-down motion
Longitudinal particles of the medium vibrate back and forth along the path that the wave travels
Amplitude the maximum distance the wave vibrates from its rest position
Wave length the distance between any two adjacent crests or compressions in the series of waves
Frequency the number of waves produced in a given amount of time
Wave speed the speed at which a wave travels
Wave speed formula wave speed equals wavelength times frequency
Reflection occurs when a wave bounces back after striking a barrier
Refraction is the bending of a wave as it passes at an angle from one medium to another
Diffraction the bending of waves around a barrier or through an opening
Interference when two or more waves overlap when they share the same space
Created by: likeab0ss

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