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IAPS Unit F

Waves

TermDefinition
Decibel A unit of measurement for the relative intensity of a sound.
Sound intensity A measurement of how much sound energy passes by a point in a certain amount of time as it spreads out from a source.
Wave A disturbance that repeats regularly in space and time and that transmits energy from one place to another.
Amplitude The maximum displacement of a wave or vibrating object from its undisturbed position.​
Frequency The number of times something repeats in one second.​
Hertz (Hz) A unit of measurement for frequency.
Wavelength The distance between two consecutive points in a wave that are moving in the same way.
Longitudinal wave A wave in which the direction of the disturbances is parallel to the direction of travel of the wave.​
Transverse wave A wave in which the direction of the disturbances is perpendicular (90*) to the direction of travel of the wave.​
Medium A substance through which something, such as a mechanical wave, is transmitted.
Wave speed The distance traveled by a reference point on a wave, such as a crest, in a given amount of time.
Visible light spectrum Different wavelengths of light are associated with different colors ranging from red (longest wavelength) to violet (shortest wavelength).
Absorption The process of taking in or taking up.​
Reflection The light that is bounced off of an object or material.
Transmission The act of energy passing through a medium.
Electromagnetic wave A transverse wave that involves disturbances in electric and magnetic fields and can travel through media and through a vacuum.​
Infrared Electromagnetic radiation that has a wavelength longer than visible light but shorter than microwaves.​
Ultraviolet Electromagnetic radiation that has a wavelength shorter than visible light but longer than X-rays.​
Created by: user-1913463
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