Electromagnetic Spectrum- Physics

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Which type of wave has the longest wavelength?
Radio Waves
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Which type of wave has the most energy?
Gamma Rays
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How do we protect ourselves from the harmful effects of ultraviolet waves?
Cover our skin with suncream
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What is meant by a white light?
The colours of the rainbow
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How do you make white light in a school lab?
Shining a ray of light through a glass prism
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Explain how William Hershel discovered infrared waves by carrying out experiments to find out which colour of the spectrum was the warmest?
He found that the temperature was highest; beyond the red end of the spectrum where there was no visible colour; this meant that there were waves with wavelengths longer than visible light.
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Explain how Johann Ritter discovered Ultraviolet waves by carrying out experiments to find out which colour of light reacted fastest wiith silver chloride?
He found that the reaction was fastest; beyond the area of violet light in the spectrum; this meant that there were waves with shorter wavelengths beyond the violet end of the visible light spectrum
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Other cards in this set

Card 2

Front

Which type of wave has the most energy?

Back

Gamma Rays

Card 3

Front

How do we protect ourselves from the harmful effects of ultraviolet waves?

Back

Preview of the front of card 3

Card 4

Front

What is meant by a white light?

Back

Preview of the front of card 4

Card 5

Front

How do you make white light in a school lab?

Back

Preview of the front of card 5
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