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Waves
| Term | Definition |
|---|---|
| Wave | a transfer of energy without a transfer of matter |
| Energy | ability to do work |
| Medium | a material through which waves can travel (solid, liquid, or gas) |
| Mechanical Waves | can only travel through a medium |
| Electromagnetic Waves | can travel through a medium or through empty space |
| Vibration | a repeated up-and-down or back-and-forth motion |
| Transverse Waves | motion occurs perpendicular(like a snake) to the direction of travel (mechanical or electromagnetic) |
| Crest | the high point on a transverse wave |
| Trough | the low point on a transverse wave |
| Compressional Wave | motion is parallel to the direction of travel (only mechanical) |
| Compression | amount of energy is greater because molecules are close together |
| Rarefaction | amount of energy is smaller because molecules are spread out |
| Amplitude | half the distance between a crest and a trough |
| Wavelength | the distance between two adjacent crests or two adjacent troughs |
| Frequency | number of wavelengths that pass by a point each second |
| Reflection | wave bounces back |
| Refraction | the bending of a wave |
| Defraction | the bending of a wave around an object |
| Absorbtion | wave is absorbed by the medium |
| Emit | wave is produced |
| Transmit | wave is moved |
| Transparent | see through |
| Translucent | foggy |
| Opaque | not see through |
Created by:
balayna
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