IONISATION

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How do x-rays work?
pass easily thorugh flesh but are absorbed by denser material like bone and metal
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Why is ionisation dangerous if it happens in your cells?
Damage to DNA molecules can cause mutations, the cells might start dividing over and over again without stopping (cancer)
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What can high doses of radiation do to your cells?
Kill your cells (when this happens its called radiation sickness)
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How do you get sunburn or skin cancer?
We are alll exposed to UV radiation (Sun). UV radiation is ionising, and can damage living cells in the skin
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The longer you are exposed to radiation, the more (?) happens
damage
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What is ionisation?
When a photon hits an atom/molecule it sometimes has enough energy to remove an electron and change the atom/molecule. This process is called ionisation.
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The changed atom or molecules can go on to do...?
To initiate other chemical reactions
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What types of radiation with high photon energy cause ionisation?
UV, X-rays, Gamma rays.
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UV, X-rays and Gamma rays are different forms of EM radiation, they are also known as...?
ionising radiation
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Other cards in this set

Card 2

Front

Why is ionisation dangerous if it happens in your cells?

Back

Damage to DNA molecules can cause mutations, the cells might start dividing over and over again without stopping (cancer)

Card 3

Front

What can high doses of radiation do to your cells?

Back

Preview of the front of card 3

Card 4

Front

How do you get sunburn or skin cancer?

Back

Preview of the front of card 4

Card 5

Front

The longer you are exposed to radiation, the more (?) happens

Back

Preview of the front of card 5
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