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Electromagnetic Waves. Chapter 12 http ://school.discoveryeducation.com/lessonplans/interact/electromagneticspectrum.html. Electromagnetic Waves- waves created by vibrating electric charges, can travel through a vacuum or matter. have a wide variety of frequencies and wavelengths.
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Electromagnetic Waves Chapter 12 http://school.discoveryeducation.com/lessonplans/interact/electromagneticspectrum.html
Electromagnetic Waves- waves created by vibrating electric charges, can travel through a vacuum or matter. • have a wide variety of frequencies and wavelengths. • All matter contains charged particles that are always in motion, so ALL objects emit electromagnetic waves.
Properties of Electromagnetic Waves • Radiant Energy- Energy carried by an electromagnetic wave. • Makes you able to see and feel warmth. Wave Speed- 300,000km/s “speed of light” Travel slowest in solids, fastest in gases. • Photon- particle that explains how electromagnetic waves energy depends on frequency of the waves.
Electromagnetic Spectrum • Range of Frequencies: 1. Radio • Microwaves • Radar • MRI’s • Infrared • Visible Light • Ultraviolet • X Rays and Gamma Rays