Question detail

What distinguishes radioactive contamination from irradiation?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Atoms and nuclear radiation

Question

A. Contamination involves direct exposure to radiation, while irradiation does not
B. Contamination is the presence of radioactive atoms, while irradiation is exposure to radiation
C. Contamination occurs only inside the body, while irradiation occurs outside
D. Contamination is a type of radiation, while irradiation is a process

Answer

The correct answer is B: Contamination is the presence of radioactive atoms, while irradiation is exposure to radiation.

Explanation

The correct answer is B: Contamination is the presence of radioactive atoms, while irradiation is exposure to radiation. This supports the learning objective "Explain why a contaminated object can continue to emit radiation." in Radioactive contamination because it uses the correct atomic and nuclear radiation relationship for Atoms and nuclear radiation. The other options are less suitable because they do not match the required Radioactive contamination idea: Contamination involves direct exposure to radiation, while irradiation does not; Contamination occurs only inside the body, while irradiation occurs outside; Contamination is a type of radiation, while irradiation is a process.

Common mistake

Contaminated Object Emission

Students often think that a contaminated object stops emitting radiation once it is removed from the radioactive source.

Emphasize that a contaminated object continues to emit radiation because it contains radioactive atoms, regardless of its location.

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