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Laabri

Week 20 Y11 PHY EXP 1 - Background Radiation

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11 Nsɛmmisa
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Use the data in both tables and any research sources available to design a guide for householders outlining the causes and effects of background radiation.

Remember: only include facts, not opinions, and quote any sources you use in your guide.

In your guide you could do the following.

· Link the various background sources to the type of radiation (alpha, beta or gamma).

· Identify any groups who might be at a particular risk (nuclear workers, medical staff, etc.).

· Offer advice on how these groups of people might minimise the risk.

· State how the level of background radiation might have changed over time (i.e. which sources are ‘modern’).

Use subheadings to make your text easier to read

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2.

Extension questions: Gamma radiation can be significantly reduced by…

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3.

What form of radiation is emitted by nuclei with too many neutrons?

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4.

Gamma radiation is...

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5.

Which form of radiation has the highest ionising power?

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6.

What causes an atom's nucleus to become unstable?

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7.

Uranium-238 emits an alpha particle to become what nucleus?

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8.

An alpha particle is…

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9.

Which type of radiation can reach the furthest?

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10.

What fraction of a radioisotope has decayed after two half-lives? - Higher

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11.

What are isotopes?