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7thSo&LightCh3Sec1&2

7th Grade Sound & Light Chapter 3 Sec. 1&2

QuestionAnswer
electromagnetic wave a transverse wave that transfers electrical and magnetic energy
electromagnetic radiation energy transferred through space by electromagnetic waves
polarized light light that passes through a polarizing filter vibrates in only one direction
photoelectric effect think of light as a stream of tiny packets or particles of energy
photon each packet of light energy
electromagnetic spectrum the complete range of electromagnetic waves placed in order of increasing frequency
radio waves electromagnetic waves with the longest wavelengths and lowest frequencies
microwaves radio waves with the shortest wavelengths and the highest frequencies
radar system that uses reflected radio waves to detect objects and measure their distance and speed
infrared rays electromagnetic waves with wavelengths shorter than those of radio waves
thermogram an image that shows regions of different temperatures in different colors
visible light electromagnetic waves that you can see
ultraviolet rays electromagnetic waves with wavelengths just shorter than those of visible light
X-rays electromagnetic waves with wavelengths just shorter than those of ultraviolet rays
gamma rays electromagnetic waves with the shortest wavelengths and highest frequencies
Created by: Karen Copanic
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