Olqhs 6th grade Science Ch 11 Voc.
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12 terms
Terms | Definitions |
|---|---|
 waves | rhythmic disturbance that carries energy but not matter |
| mechanical wave | a type of wave that can travel only travel through matter |
| transerve wave | a type of mechanical in which the wave the wave energy causes matter i the medium to move up and down or back and forth at right angles to the direction the wave travels |
| compressional wave | A type of mechanical wave in which matter in the medium moves forward and backward in the same direction the wave travel. |
| electromagnetic wave | travers waves that can travel through matter or space, are produced by the motion ofelectrically charged particles, and include X rays, ultraviolet wves and invisible lights |
| amplitude | distance a wave rises above or falls below its normal level, which is related to the energy that the waves carry; in a traverse wave,is one half the distance between a crest and a trough |
| wavelength | in traverse waves, the distance between the tops of two adjacent trough; in compressional waves, the distance from the centers of ajdacent rarefactions |
| frequency | number of wave links that pass a given pointin one socnd measured in hertz |
| reflection | occurs when a wave stikes an object or surface and bounces off |
| refraction | bending a wave as it moves from one medium into another medium |
| diffraction | bending of waves around a barrier |
| interference | ability of two or more waves to combine and form a new one when they overlap |
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