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Phy Sci Wave Quiz
Phy Sci Unit 8 Quiz
Question | Answer |
---|---|
A wave that vibrates the medium up and down or at right angles to the direction it travels | transverse |
A wave that vibrates the medium back and forth in the same direction it travels | compressional |
The top of a transverse wave | crest |
The bottom of a transverse wave | trough |
From crest to crest | wavelength in a transverse wave |
The height of a wave | amplitude |
From compression to compression | wavelength in a compressional wave |
The area of a compressional wave where it is pushed close together | compression |
The area of a compressional wave where it is spread out far apart | rarefaction |
A repeating disturbance that transfers energy through matter or space | wave |
The name for the material through which a wave moves | medium |
Any wave that needs a medium | mechanical |
This shows how much energy a wave has | amplitude (height on a transverse wave) |
What waves need no medium? | electromagnetic waves like light |
This is a measure of how many wavelengths pass a point each second | frequency |
What is the SI unit for frequency (how is it measured)? | Hertz (Hz) |
When a wave bounces off something | reflection |
The bending of a wave as it changes speed going from one medium into and through another | refraction |
The bending of a wave around something | diffraction |
A special type of wave pattern formed when waves of equal amplitude and opposite direction continuously interfere with each other. | standing wave |
When two waves overlap and combine as them move through each other | interference |
What affects the speed of a wave? | medium and temperature |
All waves are created by what? | vibrations |
What do waves carry? | energy |
What are two ways to calculate the speed of a wave? | speed = distance/time or speed = wavelength times frequency |
What does a frequency of 45 Hz mean? | 45 waves pass a point every second |
What affects the speed of a wave through a medium | What the medium is and the temperature |
What does not affect the speed of a wave through a medium | amplitude, frequency, wavelength |
What is the speed of a wave with a frequency of 50 Hz and a wavelength of .5 m? | 50 x .5 = 25 m/s |