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ch.20 vg

QuestionAnswer
Wave is any disturbance that transmits energy through matter or space.
Medium is a substance through which a wave can travel
Energy transforms through a medium by vibration of particles
Sound waves work by vibration 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 wave examples visible light, TV, signals, radio signals, x rays, and microwave ovens
Classifying waves on direction in which the particles of the medium vibrate compared with the direction in which the waves travel.
Transverse waves waves in which the particles vibrate in up and down motion
Longitudinal waves particles in the medium vibrate back and forth along the path that the waves travel.
Amplitude the maximum distance the waves vibrates from its rest position
Wave length the distance between any two adjacent crests or compression 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 λ
Reflection occurs when a wave bounces back after striking 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 the result of two or more waves overlapping
Created by: vincent.g
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