Electromagnetic Waves
This lesson covers:
- The different types of electromagnetic waves
Electromagnetic waves are:
Longitudinal waves
Transverse waves
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parallel / perpendicular
Transverse waves oscillate to the direction of energy transfer.
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In a vacuum, electromagnetic waves travel at:
3 x 108 km/hr
3 x 108 m/s
8 x 103 km/hr
8 x 103 m/s
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Which of the following is true of radio waves?
They have a short wavelength, and a high frequency
They have a short wavelength, and a low frequency
They have a long wavelength, and a high frequency
They have a long wavelength, and a low frequency
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Which of the following is true of gamma waves?
They have a long wavelength, and a high frequency
They have a short wavelength, and a high frequency
They have a short wavelength, and a low frequency
They have a long wavelength, and a low frequency
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Write the seven different regions of the electromagnetic spectrum in order of decreasing wavelength, starting with the longest.
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Which of types of electromagnetic waves can be used in communication?
(Select all that apply)
Gamma rays
Radio waves
X-rays
Microwaves
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Which of the following types of electromagnetic waves are considered ionising?
(Select all that apply)
X-rays
Microwaves
Radio waves
Gamma rays
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Electromagnetic waves can be:
(Select all that apply)
Translated
Transmitted
Reflected
Absorbed
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