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Chap 13.

Part 2

TermDefinition
destructive interference A superposition of 2 or more waves that produces an intensity equal to the difference of the individual waves
constructive interference A superposition of 2 or more waves that produces an intensity equal to the sum of the intensities of individual waves
medium Matter through which a wave travels
mechanical wave A wave that can only travel through matter
electromagnetic wave Waves created by vibrating electric chargers
transverse wave Wave in which the matter in the medium moves at right angles to the direction of the wave, has crest and troughs
longitudinal wave A wave in which the medium moves back and forth along the direction that the wave travels
Crest The highest point on a transverse wave
Trough The lowest point on a transverse wave
amplitude A measure of the size of the disturbance of a wave, related to energy that it carries
wavelength Distance between one point on a wave and the nearest point just like it
period Amount of time it takes a wavelength to pass a fixed point. Unit: Sec
frequency The number of wavelengths that pass a fixed point each second Unit: hertz (Hz)
Doppler effect Change in frequency occurs when a source is moving relative to an observer
diffraction The bending of waves around an obstacle can occur when waves pass through a narrow opining
refraction Bending of a wave caused by a change in it's speed as it travels from one medium to another
interference The process of 2 or more wave overlapping and combining to form a new wave
standing wave Wave pattern that forms when waves of equal wavelength and amplitude but traveling in opposite directions, interfere with each other, not appearing to be traveling
reflection Bouncing back of a ray light, sound, or heat. When ray hits surface it does not go through
Created by: user-1980469
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