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waves waves and more
8th grade-waves, sound waves and light waves
| Question | Answer |
|---|---|
| wave | A rhythmic disturbance that transfers energy from one place to another. Energy is required to make a wave |
| wavelength | the distance between a point on one wave and the identical point on the next wave |
| amplitude | the greatest distance a wave rises or falls from its resting position (or height of the wave |
| transverse wave | Matter moves at right angles to the direction the wave travels (like a rope) |
| wave frequency | count of the number of waves that passes a given point in one second |
| sound wave | compressional wave/ longitudinal wave. needs vibration and medium |
| compressional wave | Longitudinal wave, matter vibrates in the same direction as the wave (compressed spring) |
| velocity of wave | velocity = wavelength x frequency speed of wave |
| Volume | loudness depends on amplitude of the wave. the louder =greater amplitude |
| decibel | measure of volume |
| pitch | high or low a sound is heard by our ears. depends on how many times the air vibrates per one second |
| The Doppler Effect | a change in wave frequency caused by the motion of the sound source or the motion of the observer. |
| interference | the ability of two or more waves to combine together to form a new wave |
| Crest | top of a wave (highest part of the wave) |
| trough | bottom of wave (lowest part of wave) |
| longitudinal wave | energy moves in the same direction as the save travels |
| rarefaction | particles least dense, trough of the longitudinal wave |
| Hertz | Hz units for frequency of wave (waves per second |
| compression | particles most dense, crest of longitudinal wave |
| reinforcement | compression of sound wave match amplitude and volume increase |
| cancellation | compressions don't match, decreases amplitude and volume |
| ROYGBIV | the only part of the visible spectrum that humans can see, |
| White light is refracted... | it is broken up into all of the wave lengths of visible light (ROYGBIV) |
| White light is made of | all of the wavelengths of the visible spectrum ROYGBIV |
| Transparent | an object that lets all light pass through it |
| translucent | an object that lets some light pass through it |
| opaque | an object that lets no light pass through it. |
| refraction | the bending of light due to a change in the speed (BENDS) |
| Electromagnetic spectrum | transverse waves arranged by their different wavelengths. Longest waves to short wavelengths |
| Frequency | measure waves per second , units Hertz |
| high frequency | short wavelengths closer together |
| low frequency | longer wavelengths more spread out |
| light colors | reflect light |
| dark colors | absorb light |
| reflection | bouncing back of a wave |
| sound | a form of energy produced by vibrations, longitudinal wave |
| Convex lenses | object appears larger |
| Concave lenses | Object appears smaller |
Created by:
lockwoodscience
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