Ch 15 Wavess
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| wave | A disturbance that transfers energy from place to place
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| energy | The ability to do work or cause change
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| medium | The material through which a wave travels
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| mechanical wave | A wave that requires a medium through which to travel
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| vibration | A repeated back-and-forth or up-and-down motion
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| transverse wave | A wave that moves the medium in a direction perpendicular to the direction in which the wave travels
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| crest | The highest part of a transverse wave
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| trough | The lowest part of a transverse wave
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| longitudinal wave | A wave that moves a medium in a direction parallel to the direction in which the wave travels
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| compression | The part of a longitudinal wave where the particles of the medium are close together
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| rarefaction | The part of a longitudinal wave where the particles of the medium are far apart
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| amplitude | The maximum distance the particles of a medium move away from their rest positions as a wave passes through the medium
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| wavelength | The distance between two corresponding parts of a wave
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| frequency | The number of complete waves that pass a given point in a certain amount of time
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| hertz | Unit of measurement for frequency
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| reflection | The bouncing back of an object or wave when it hits a surface through which it cannot pass
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| law of reflections | The rule that the angle of reflections equals the angle of incidence
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| refraction | the bending of waves as they enter a new medium at an angle
diffraction
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| interference | The interaction between waves that meet
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| constructive interference | The interference that occurs when waves combine to make a wave with a larger amplitude
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| destructive interference | the interference that occurs when two waves combine to make a smaller amplitude
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| standing wave | A wave that appears to stand in one place
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| node | A point of zero amplitude on a standing wave
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| antinode | A point of maximum amplitude on a standing wave
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| resonance | The increase in the amplitude of a vibration that occurs when external vibrations match an object’s natural frequency
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| seismic wave | A wave produced by an earthquake
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| P wave | A longitudinal seismic wave
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| S wave | A transverse seismic wave
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| surface wave | A combination of longitudinal wave and a transverse wave that travels along the surface of a medium
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| tsunami | A huge surface wave on the ocean caused by an underwater earthquake
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| seismograph | An instrument used to detect and measure earthquake waves
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Created by:
redzone31
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