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EM Spectrum

Covers terms and definitions of the electromagnetic spectrum

TermDefinition
Electromagnetic waves energy from vibrating electrons; partly electric and partly magnetic
Radiant energy energy from light that is transmitted by electromagnetic waves
Electromagnetic Spectrum light waves classified by frequency: radio waves; microwaves; infrared; visible light; UV; X-ray; gamma.
Radio waves has the longest wavelength ; lowest frequency; radio; TV; walkie-talkies; MRI
Microwaves cook food in microwaves; cell phone signals
Infrared light felt as heat; heats the Earth; night-vision technology; thermal imaging; waves below RED
Visible Light or Spectrum the only EM waves that can be seen by the human eye; white light made of ROY G. BIV
Ultraviolet rays Many insects can see UV light; used to kill bacteria; used to identify certain types of rock; can damage skin.
X-rays Can travel through most matter; used to make images of bones; used in airline security checks
Gamma rays Has the most energy; released in radioactive material-nuclear bombs; used to kill cancer cells, found in space.
Rays EM waves travel in straight lines (rays) from its source.
Vacuum Light waves travel through empty space and DO NOT need a medium.
Speed of Light 186,000 miles per second / 300,000 kilometers per second
Properties of waves Frequency, Amplitude, Wavelength, Transport energy
Light vibrations Visible light vibrates more than 100 trillion times per second
Created by: jtirby