They all travel at the same speed through a vacuum (space)
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Which types of electromagnetic waves can be used for communication?
Radio waves, microwaves, infrared and visible light
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What are the uses of radio waves?
television and radio - including Bluetooth
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What are the uses of microwaves?
Mobile phones and satellite television
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What are the uses of infrared?
Remote controls
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What are the uses of visible light?
Photography
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What are the uses of ultraviolet?
Security marking
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What are the uses of x-rays?
Medical Imaging
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What are the uses of gamma rays?
sterilising surgical instruments and killing harmful bacteria in food
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What can microwaves do to the body, making them hazardous?
Heats body tissues
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What can infrared do to the body, making them hazardous?
Burn Skin
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What can ultraviolet do to the body, making them hazardous?
Cause skin cancer and blindness
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What can x-rays do to the body, making them hazardous?
High doses can kill cells
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What can gamma rays do to the body, making them hazardous?
Cause genetic mutations
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Tell me about x-rays?
x-rays are part of the electromagnetic spectrum, they have a very short wavelength, high energy and can cause ionisation
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What are the properties of x-rays?
They affect photographic film in the same way that light does, they are absorbed by metal and bone, they are transmitted by healthy tissue
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What can x-rays be used for?
X-rays can be used to diagnose some medical conditions (e.g. in Ct scanning, bone fractures and dental problems), they can also be used to kill cancer cells
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Other cards in this set
Card 2
Front
Which types of electromagnetic waves can be used for communication?
Back
Radio waves, microwaves, infrared and visible light
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