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4 Cards in this Set
- Front
- Back
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What is electromagnetic spectrum? |
The entire range of frequencies of electromagnetic radiation that can be produced is called the electromagnetic spectrum. This ranges from low-energy radiation, such as radio waves, through to high-energy gamma radiation. As the energy of the radiation increases, the frequency of the electromagnetic waves increases, and the wavelength decreases. |
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What speed does the electromagnetic wave travel at? |
Electromagnetic waves all travel at the speed of light, which is 300 000 km/s. |
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What can electromagnetic waves pass through? |
Electromagnetic waves can travel through empty space, gases, liquids and some solids. |
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What happens when the substances absorb electromagnetic radiation and energy. |
The substance may heat up or change in some way. As an example, a solar cell can convert light into an electric current. |
