| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Radioactive contamination is the unwanted presence of materials
containing radioactive atoms on other materials. |
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What is meant by radioactive contamination? Describe how radioactive contamination can occur.
Compare precautions taken by a teacher handling radioactive sources with those used by, say, in a nuclear power station. |
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The hazard from
contamination is due to the decay of the contaminating atoms. The type of radiation emitted affects the level of hazard. |
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What is the hazard of contamination? |
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Irradiation is the process of exposing an object to nuclear radiation. The
irradiated object does not become radioactive. |
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What is Irradiation? |
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Students should be able to compare the hazards associated with
contamination and irradiation. |
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What are the hazards associated with
contamination and irradiation? Evaluate the use of irradiating fruit in terms of cost of goods and potential risk due to the exposure of workers and consumers of the irradiation process. |
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Suitable precautions must be taken to protect against any hazard that
the radioactive source used in the process of irradiation may present. |
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What type of suitable precaution must be taken to protect against any hazard that
the radioactive source used in the process of irradiation may present. EW : Justify the use of radioactive sources in school in terms of risk-benefit analysis to the students in the class. |
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