uses of EM radiation

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  • Created by: abic1
  • Created on: 03-05-16 19:24
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  • uses of EM radiation
    • non ionising radiation transfers energy and heats things up
    • the more intense and the longer the exposure the hotter it gets
    • microwaves heat food in microwaves
    • infrared radiation cooks food in ovens
    • microwaves make particles vibrate
    • when particles vibrate they heat up
    • water molecules absorb microwaves so food is heated up
    • microwave ovens have metal cases and glass screens to reflect and absorb the microwaves
    • microwaves are used to send signals between mobiles and phone masts
    • phones emit microwaves which some are absorbed by the body
    • microwaves heat body tissues which some people think may cause health problems


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