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12 Cards in this Set
- Front
- Back
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Electromagnetic waves can be grouped according to their wavelength and frequency.
Match the words in the list with the spaces 1 to 4 in the diagram.
A gamma rays ………. B microwaves ……….
C ultraviolet rays ………. D visible light ……….
1 x rays 2 3 infar red rays 4 radio waves |
A1, C2, D3, B4 |
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The number of waves passing a point each second is the …
A amplitude B frequency C speed D wavelength |
B |
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Which of the following statements about the waves of the electromagnetic spectrum is true?
A They all have the same frequency.
B They all have the same wavelength.
C They all travel at the same speed through space. D They cannot travel through a vacuum. |
C |
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Shadow pictures of the bones can be produced using |
x-rays |
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Which type of electromagnetic radiation is used to send signals from a TV remote control? |
infra red |
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What is a longitudinal wave? – give an example |
Vibrations are in the same direction as the transfer of energy Example – sound, mechanical waves |
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What is a transverse wave? – give an example |
Vibrations are at 90 degrees to the direction of energy transfer example – electromagnetic waves, mechanical waves |
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If a wave has a wavelength of 2m and vibrates 2 a second what speed is the wave travelling at? |
4m/s |
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What are the 7 members of the electromagnetic spectrum? |
Gamma, X-ray, Ultraviolet, Visible light, infra red, microwave, radio |
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Describe how reflection occurs |
Light is incident on a flat surface (mirror) and the angle it is incident on the surface is the angle is reflects at |
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Describe how refraction occurs |
Light (or other waves) changes direction as it enters a substance of a different density |
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Describe how diffraction occurs |
A wave spreads out when passing through a gap that is of a similar size to the wavelength
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