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Physics-Waves/Sound
Question | Answer |
---|---|
Transverse waves | wave that transfers through a medium and causes the medium to vibrate at right angles |
Longitudinal waves | wave that transfers through a medium and causes medium to vibrate only in the direction parallel to the wave’s motion and transfers energy through that medium |
Longitudinal wave in an earthquakes | moves as a series of compression and rarefactions |
Amplitude | the amount of energy carried by a wave and the maximum displacement of a medium from the rest position |
Reflection | occurs when a wave bounces off a surface that it cannot pass through, like a racquetball hitting a wall |
Refraction | the bending of a wave as it enters a new medium at an oblique angle, must travel at a different speed within the two media |
Sound travels fastest through | cast iron |
Doppler Effect | a change in sound frequency caused by the motion of the sound source (like a firetruck as it goes past you) |
Pitch | sound source |
Electromagnetic waves | transverse wave consisting of changing electric and changing magnetic fields, causes variation in wavelength and frequency |
Formula to find frequency | speed of wavelength and the speed of the wave |