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1.20: Study of Space by the Electromagnetic Spectrum

Difficulty Level: Basic Created by: CK-12
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Vocabulary

electromagnetic radiation

Energy transmitted through space as a wave.

electromagnetic spectrum

Full range of electromagnetic radiation.

frequency

Number of wavelengths that pass a given point every second.

light-year

Distance that light travels in one year; 5.9 trillion miles, 9.5 trillion kilometers.

visible light

Portion of energy in the electromagnetic spectrum that is visible to humans.

wavelength

Horizontal distance from wave crest to wave crest, or wave trough to wave trough.

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Difficulty Level:
Basic
Grades:
6 , 7
Date Created:
Jan 04, 2013
Last Modified:
Aug 31, 2016
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SCI.ESC.124.3.L.1