Understanding Waves, Light, & Sound: Vocabulary and Concepts
This chapter covers essential vocabulary and concepts related to waves, light, and sound, including amplitude, crest, diffraction, Doppler effect, electromagnetic wave, frequency, interference, longitudinal wave, mechanical wave, medium, photon, pitch, reflection, refraction, sound wave, standing wave, transverse wave, trough, and wavelength.
- waves
- light
- sound
- vocabulary
- concepts
- amplitude
- crest
- diffraction
- Doppler effect
- electromagnetic wave
- frequency
- interference
- longitudinal wave
- mechanical wave
- medium
- photon
- pitch
- reflection
- refraction
- sound wave
- standing wave
- transverse wave
- trough
- wavelength
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Presentation Transcript
Chapter 14/15 Vocabulary Waves, Light, & Sound
Amplitude The maximum distance that the particles of a wave s medium vibrate from their rest position
Crest The highest point of a wave
Diffraction A change in the direction on a wave when the wave finds an obstacle or an edge, such as an opening
Doppler Effect An observed change in the frequency of a wave when the source or observer is moving
Electromagnetic Wave A wave that consist of oscillating electric and magnetic fields, which radiate outward at the speed of light
Frequency The number of cycles or vibrations per unit of time
Interference The combination of two or more waves of the same frequency that results in a single wave
Longitudinal Wave A wave in which the particles of the medium vibrate parallel to the direction the wave is traveling
Mechanical Wave A wave that requires a medium through which to travel
Medium The matter through which a wave travels
Photon A unit or quantum of light
Pitch A measure of how high or low a sound is perceived depending on the frequency of sound waves
Reflection The bouncing back of a ray or wave when it hits a surface that it does not go through
Refraction The bending of a wave front as the wave front passes between two substances in which the speed of the wave differs
Sound Wave A longitudinal wave that is caused by vibrations and that travels through a material medium
Standing Wave A pattern of vibration that simulates a wave that is standing still
Transverse Wave A wave in which the particles of the medium move perpendicular to the direction the wave is traveling
Trough The lowest point of the wave
Wave A periodic disturbance in a solid, liquid or gas as energy is transmitted through a medium
Wavelength The distance from any point on a wave to an identical point on the next wave
