Question detail
Compare the hazards of alpha, beta, and gamma radiation when they are outside the body. Which type poses the greatest risk and why?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Atoms and nuclear radiation
Question
Compare the hazards of alpha, beta, and gamma radiation when they are outside the body. Which type poses the greatest risk and why?
Answer
Alpha radiation is the least hazardous outside the body because it cannot penetrate the skin. Beta radiation can penetrate the skin but is less ionising than alpha. Gamma radiation is the most hazardous outside the body due to its high penetration power and ability to cause ionisation in tissues.
Explanation
This question tests the understanding of the relative hazards of different types of radiation based on their penetration abilities and ionising power. It requires students to apply their knowledge of radiation properties to a practical context.
Common mistake
Misunderstanding Radiation Hazards
Students often confuse the hazards of alpha, beta, and gamma radiation, thinking they are equally dangerous outside the body.
To fix this, students should study the penetration abilities and ionising powers of each type of radiation, noting that alpha radiation is the least penetrating and gamma radiation is the most penetrating, which affects their relative hazards.
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