Ch. 4: EM Waves - Vocabulary

A wave made up of a combination of an electric and magnetic field that can transfer electric and magnetic energy through a vacuum or medium

• Electromagnetic radiation

• Electromagnetic wave

• Amplitude modulation

• Gamma rays

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The energy transferred through space by electromagnetic waves

• Radar

• Electromagnetic waves

• Photoelectric effect

• Electromagnetic radiation

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The ejection of electrons from a substance when light is shined on it

• Polarized light

• Photoelectric effect

• X-rays

• Frequency modulation

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Light that has been filtered so that all of its waves are parallel to each other

• Polarized Light

• Visible Light

• Electromagnetic spectrum

• Photon

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A tiny particle or packet of light energy

• Photoelectric effect

• Radio waves

• X-rays

• Photon

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The complete range of electromagnetic waves placed in order of increasing frequency

• Thermogram

• Ultraviolet rays

• Electromagnetic spectrum

• Radar

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Electromagnetic waves with the longest wavelengths and lowest frequencies

• Radio waves

• Visible light

• Infrared rays

• Mircowaves

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Electromagnetic waves that have shorter wavelengths and higher frequencies than radio waves

• Radar

• Gamma rays

• Microwaves

• X-rays

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A system that uses reflected radio waves to detect objects and measure their distance and speed

• Thermogram

• Infrared rays

• Radar

• Visible light

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Electromagnetic waves with shorter wavelengths and higher frequencies than microwaves

• Infrared rays

• Gamma rays

• Radio waves

• Electromagnetic spectrum

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