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8th Grade Science
Waves
Question | Answer |
---|---|
wave | the transfer of energy moving through a medium |
amplitude | a measure of how far the particles in the medium move away fro their normal rest position |
wave length | the distance from any point on a wave to an identical point on the next wave |
wave period | the time required for one wave length to pass a given point |
frequency | tells how many cycles occur in an amount of time |
hertz | one equals one wavelength per second |
wave speed | speed at which a wave travels depending on the properties of the medium |
transverse wave | a wave in which the particles of the medium move perpendicularly to the direction of the wave is moving |
electromagnetic wave | a wave that is emitted by vibrating electrical charges and can travel through a vacuum. |
mechanical wave | a wave that requires a medium in which to travel |
longitudinal wave | a wave in which the particles of the medium vibrate parallel to the direction of wave motion |
medium | material that energy can transfer through |