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science vocab ch. 3

TermDefinition
amplitude modulation (AM) the method of transmitting radio signals by changing the amplitude of the waves
Bioluminescence light produced by organisms as a result of a chemical reaction
electromagnetic radiation the energy transferred by electromagnetic waves
electromagnetic spectrum the range of electromagnetic placed in a certain order
Electromagnetic wave transverse waves that transfer electric and magnetic energy
Fluorescent light lights that glow when a electric current cause ultraviolet waves to strike a coating inside a tube
Frequency modulation (FM) method of transmitting radio signals by changing the frequency of the waves
gamma ray electromagnetic waves with the shortest wavelength and highest frequencies
illuminated words used to describe an object that can be seen because it reflects light
incandescent light lights that glow when something inside them is hot
infrared ray electromagnetic waves with higher frequencies and shorter wavelengths than radio waves
luminous word used to describe an object that can be seen because it emits light
magnetic resonance imaging a process that uses radio waves to form pictures of the inside of the human body
microwave radio waves with the shortest wave lengths and the highest frequencies
neon light glass tubes filled with neon that produce light
photoelectric effect the movement of electrons in a substance when light is shined on it
photon a tiny particle or packet of light energy
polarized light light that vibrates only one direction
radar a system of detecting reflected radio waves
radio wave electromagnetic waves with the longest wavelengths and the lowest frequencies
sodium vapor light bulbs containing solid sodium plus neon gas that produces light
spectroscope an instrument used to view the different colors of light produce by different sources
thermogram an image that shows regions of different colors
tungsten-halogen light bulbs containing a tungsten filament and a halogen gas that produces light
ultraviolet ray electromagnetic waves with frequencies higher than visible light but lower than x-rays
visible light electromagnetic waves that are visible to the human eye
x-ray electromagnetic waves with higher frequencies than ultraviolet rays but shorter than a gamma ray
Created by: amytozib
 

 



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