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# Science Chapter 11

amplitude the measure of how energy is carried by a wave
Compression Wave a kind of wave where the matter in the medium moves back and forth in the same direction that the wave travels; has compressions and rarefactions
crest the highest point on a transverse wave
diffraction describes the bending of waves around a barrier; can also occur when waves pass through a narrow opening
frequency measures how many wave links pass a fixed point each second and is expressed in Hertz (Hz)
interference occurs when 2 or more waves overlap and combine to form a new wave, can form a larger wave or a smaller wave
medium any material- a solid, a liquid, or gas that a wave transfers energy through
rarefaction the least dense region of a compressed wave
refraction bending of a wave as it charges speed moving from one medium to another
standing wave a type of wave that forms when waves of equal length and amplitude, but traveling in opposite directions continuously interfere
transverse wave a type of wave such as a water wave where the matter in the medium move back and forth at a right angle to the direction the wave travels (highest- crest, lowest- trough
trough the lowest point of a transverse wave
wave a rhythmic disturbance that transfers energy through matter or space; it exists only as long as it has energy to carry
wave length the disturbance between one point on a wave, and the nearest point just like it on the following wave, as frequency increases wavelength decreases
Do wave carry energy with, or without transporting matter? without
Do all waves need a medium to travel through? explain No, light waves
What direction do compressional, and transverse wave move in? back and forth; up and down
What regions of a compressional wave is less dense, and what is more dense? less- compressions more- rarefactions
Which travel faster, sound or light waves? light waves
what is frequency expressed in? hertz (Hz)
The more energy a wave carries the ______ its amplitude greater
The less dense the rarefactions the _________ the amplitude is greater
(For test know how to count wavelengths)
Created by: ChloeMJ