EM Spectrum Vocabulary and Definitions

EM Spectrum Vocabulary and Definitions
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Electromagnetic Spectrum Lesson Plans

The Electromagnetic Spectrum

By Oliver Smith

The electromagnetic spectrum, or EM spectrum, is all around us. The activities in this guide will help students master the different types of radiation in the EM spectrum.




Electromagnetic Spectrum

Storyboard Description

EM Spectrum Vocabulary | Electromagnetic spectrum definition

Storyboard Text

  • Frequency
  • Wave Speed
  • Wavelength
  • Frequency is the number of waves to pass a point every second, measured in Hertz (Hz).
  • Heinrich Rudolf Hertz
  • 
  • How fast a wave travels is called wave speed, measured in meters per second (m/s). All EM waves travel at the speed of light in a vacuum.
  • Wavelength is the length of one wave, measured in meters (m).
  • Ionizing
  • EM Spectrum
  • Amplitude
  • A wave that can remove electrons from an atom, thus making them an ion, is said to be ionizing.
  • Amplitude is the height of a wave, measured in meters (m). The higher the amplitude, the higher the intensity of the wave.

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