Ionising electromagnetic radiation
Lesson 2 / 27
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I can explain the properties, uses and dangers of ionising electromagnetic radiation.
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All EM waves can transfer energy, from a source to an absorber.
Only UV, X-ray and gamma frequencies of EM wave cause ionisation. The higher the frequency, the more ionising.
Ionising radiation can damage cells, cause genes to mutate and increase the risk of cancer.
UV is used in lighting and to disinfect water. It causes tanning/sunburn. It increases the risk of skin cancer.
X- and gamma rays are used in medical imaging. Gamma rays are used to kill cancer cells and to sterilise food/equipment.
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