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4 Cards in this Set
- Front
- Back
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What do electromagnetic waves form? |
continuous spectrum all electromagnetic waves travel at the same speed through a vacuum |
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What electromagnetic waves can be used for communication? |
radio microwaves infrared visible light |
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What are the uses of electromagnetic waves? |
radio waves - TV and radio microwaves - phones and satellite TV infrared - remote controls visible light - photography ultraviolet - security marking X-rays - medical imaging gamma rays - sterilising surgical equipment and killing harmful bacteria in food |
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What are the risks of electromagnetic waves? |
microwaves - heating of body tissue infrared - skin burns ultraviolet - skin cancer and blindness X-rays - high dosage kills cells gamma rays - genetic mutations |
