Ionising Radiation and Living Things

Ionising Radiation and Living Things - Standard Grade...

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The Effects of Radiation on Living Things Standard Grade Physics Health Physics
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From this lesson and for the exam, you should be able to: State that radiation can kill living cells or change the nature of living cells. State that radiation energy may be absorbed in the medium through which it passes. State that the dose equivalent is measured in sieverts. State that for living materials, the biological effect of radiation depends on the absorbing tissue and the nature of the radiation. Understand that the dose equivalent measured in sieverts takes account of the type and energy of radiation.
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What types of radiation are harmful? Why is ionising radiation harmful? Radiation
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Radiation may be absorbed by the medium it passes through. All living things contain living cells. We have many different types of cells which perform different functions including: Skin cells. Red blood cells (they transport oxygen around the body) White blood cells (they fight infection). Nerve cells. Muscle cells. Brain cells. Radiation can kill living cells or change the nature of living cells.
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Ionising radiation can kill or change the nature of living cells. The effects of the damage inflicted by the ionising radiation may: be severe and cause immediate effects, or not become apparent for a long time. The biological effect of radiation depends on: The type of radiation. The type of body tissue or body organ that absorbs the radiation.
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Ionising Radiation and Living Things - Standard Grade...

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