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Waves
Waves Study Guide
| Term | Definition |
|---|---|
| Amplitude | the maximum displacement of an energy wave from its rest position (middle) to its peak. |
| Compression | area of a longitudinal wave where the particles are more densely clustered. |
| Compressional Wave | Waves where particles of the medium only move in the same direction as the motion of the wave. |
| Constructive Interference | the increase of energy when in-phase waves merge |
| Crest | the point of a waves maximum displacement above the rest position |
| Destructive Interference | when the crest of one wave passes through the trough of another wave |
| Diffraction | the spreading out of light or sound waves after passing through an opening |
| Doppler Effect | EITHER the source or the listener is moving to change the pitch or wavelength |
| Frequency | number of wavelengths per second passing a point |
| Longitudinal Wave | mechanical waves vibrating in the same direction as the wave motion |
| Medium | the material through which a wave travels |
| Rarefaction | the region of the lowest particle density in a longitudinal wave |
| Reflection | the bouncing back of energy waves |
| Refraction | the bending of waves by a change in speed |
| Transverse Wave | a wave that is perpendicular (90 degrees) to the wave direction. |
| Trough | the lowest point of maximum displacement in a transverse wave |
| Wave | a repeating disturbance or movement that transfers energy |
| Wave length | the length of a complete wave cycle from crest to crest |
| Wave energy | determines how far a wave will travel |
| Light travels fastest through what medium? | Gases |
| Speed travels faster in which mediums? | Dense mediums like steel |
| Used to measure frequency | Hertz |
| Wavelength is equal to? | speed divided by frequency (hertz) |
| As the number of waves passing a point increases, what happens to the distance between each wave? | Decreases |
| The shortest wavelength in electromagnetic radiation? | Gamma rays |
| Electromagnetic wavelengths that are slightly longer than visible light | Infrared waves |
| Which waves can cause sunburn and cancer? | ultraviolet |
| Used to make internal images of the human body | Ultrasound |
| Waves used for communication | radio waves |
| This usually occurs inside a material rather than at the surface | Absorption |
| the frequency at which a system oscillates when it is disturbed | Natural frequency |
| The shorter the wavelength =______ hertz? | greater |
| As the angle of incidence increases, what happens to the angle of refraction? | It increases |
Created by:
FordLCHS
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