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PS Vocab #2 Qtr. 2

PS Vocab #2 Qtr. 2 Chapter 9 Introduction to Waves

TermDefinition
wave a repeating disturbance that transfers energy through matter or space.
medium matter through which a wave travels.
mechanical wave waves that can travel only through matter. There are two types: longitudinal and transverse.
transverse wave where particles in the medium moves back and forth at right angles to the direction that the wave travels.
longitudinal wave where matter in the medium moves back and forth along the same direction that the wave travels.
crest the high points of a transverse wave.
trough are the low points of a transverse wave.
compression the more dense region of a longitudinal wave.
rarefaction the less-dense region of a longitudinal wave
wavelength the distance between one point on a wave and the nearest point just like it.
frequency the number of wavelengths that pass a fixed point each second.
period the amount of time it takes one wavelength to pass a point.
amplitude a measure of the size of the disturbance from a wave.
refraction the bending of a wave caused by a change in its speed as it travels from one medium to another.
diffraction the bending of a wave around an object.
interference the process of two or more waves overlapping and combining to form a new wave.
standing wave a special type of wave pattern that forms when waves equal in wavelength and amplitude but traveling in opposite directions continuously interfere with each other.
node locations where the interfering waves always cancel.
resonance the process by which an object is made to vibrate by absorbing energy at its natural frequencies.
Created by: Mr. Bryant
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