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Chapter15 Waves
| Term | Definition |
|---|---|
| Wave | a disturbance that transfers energy from place to place |
| Energy | the ability to do work or cause change |
| Medium | the material through which a eave travels |
| Mechanical Wave | a wave that requires a medium through which to travel |
| Vibration | a repeated back and forth ad up and down motion |
| Transverse Wave | a wave that moves the medium in a direction perpendicular to the direction in which the wave travels |
| Crest | the highest part of a transverse wave |
| Trough | the lowest part of a transverse wave |
| Longitudinal Wave | a wave that moves a medium in a direction parallel to the direction in which the wave travels |
| Compression | the part of a longitudinal wave where the particles of the medium are close together |
| Rarefaction | the part of a longitudinal wave where the particles of the medium are far apart |
| Amplitude | the maximum distance the particles of a medium move away from their rest positions as a wave passes through the medium |
| Wavelength | the distance that transfers energy from place to place |
| Frequency | the number of complete waves that pass a given point in a certain amount of time |
| Hertz | unit of measurement for frequency |
| Reflection | the bouncing back of an object or wave when it hits a surface through which it cannot |
| Law of Reflection | the rule that the angle of reflection equals the angle of incidence |
| Refraction | the bending of waves as they enter a new medium at an angle |
| Diffraction | the bending as waves as they move around a barrier of pass through an opening |
| Interference | the interaction between waves that meet |
| Constructive Interference | the interference that occurs when waves combine to make a wave with a larger amplitude |
| Destruction Interference | the interference that occurs when two waves combine |
| Standing Wave | |
| Node | |
| Antinode | |
| Resonace | |
| Seismic Wave | |
| P Wave | |
| S Wave | |
| Surface Wave | |
| Tsunami | |
| Seismograph |