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Science Chapter 11
Question | Answer |
---|---|
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) | ⇜ |