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science 6

Waves

TermDefinition
Wave a disturbance that transmits energy through matter or empty space
medium the substance that a wave travels through
Mechanical Wave waves that need a medium to travel through
Electromagnetic Waves waves that DO NOT need a medium to travel through
Crest The highest points of a wave
Trough lowest points of a wave
Amplitude wave height, measured from rest position to crest or trough
Wavelength The distance between two crests of two troughs
Frequency The number of waves produced in a given time.
Reflection When a wave bounces back after hitting a barrier
Refraction The bending of a wave when it passes through one medium to another at an angle
Diffraction The bending of waves around a barrier or an opening
Interference when 2 or more waves overlap
destructive interference if 2 waves have the same amplitude or height and they cancel each other out.
Constructive interference when 2 crest overlap and result in a wave with larger amplitude, and has more energy.
Created by: shann1