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10 Cards in this Set
- Front
- Back
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Definition of Radio Waves
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light with very long wavelengths (and hence low frequencies)—longer than those of infrared light
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Definition of Wavelength
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the distance between adjacent peaks or troughs of a wave
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Definition of Frequency
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describes the rate at which peaks of wave pass by a point; measured in units o f 1/s, often called cycles per second or hertz
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Definition of Electromagnetic Spectrum
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the complete spectrum of light, including radio waves, infrared, visivle light, ultraviolet light, X rays, and gamma
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Definition of Speed of Light
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the speed at which light travels, which is about 300,000 km/s
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Definition of Ultraviolet
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light with wavelength that fall in the portion of the electromagnetic spectrum between visible light and X rays.
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Definition of X-ray
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light with wavelengths that fall in portion of the electromagnetic spectrum between ultraviolet light and gamma rays
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Definition of Gamma Rays
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light with very short wavelengths (an hence high frequencies)—shorter than those of X rays
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Definition of Photon
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an individual particle of light, characterized by a wavelength and a frequency
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Definition of Atom
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consist of a nucleus made from protons and neutrons surrounded by a cloud of electrons
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