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Exploring the Electromagnetic Spectrum

Exploring the Electromagnetic Spectrum

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Tags: science   physics   chemistry   rst.6-8.4   rst.9-10.4   rst.11-12.4   high school   ngss   hs-ps4-1   ps4-1  

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Electromagnetic spectrum
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the distribution of electromagnetic radiation according to frequency or wavelength
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Electromagnetic radiation
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energy associated with electric and magnetic fields that travels at the speed of light in free space
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Transverse wave
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a wave that displaces a medium in a direction perpendicular to the direction of propagation
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Radio waves
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radiation transmitted by radios and TVs; used in remote sensing and radar systems
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Microwaves
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radiation used extensively in telecommunications and radar, and commonly in heating food
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Terahertz
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radiation able to penetrate non-conducting materials; researched for use in imaging and surveillance
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Infrared light
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radiation that emits energy in the form of heat; used in remote sensing
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Visible light
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radiation seen by the unaided human eye as a range of different colors
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Ultraviolet light
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radiation from the sun that can damage skin, causing cancer and premature aging
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X-rays
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radiation formed when accelerated electrons hit a target; used widely in medical imaging
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Gamma rays
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high energy, ionizing radiation emitted from the nucleus of a radioactive atom
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Ionizing radiation
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any radiation with sufficient energy to strip electrons and break chemical bonds in matter
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Remote sensing
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the science of gathering data about an object or area from a distance
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Radar (Radio Assisted Detection and Ranging)
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method to detect the position or speed of a moving object using high frequency electromagnetic waves
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Electromagnetic waves
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transverse waves that can propagate their energy either through a medium or a vacuum
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