Alpha/Beta/Gamma: Calculations & Formulae
Science
Year 9
9 questions
~18 mins
1 views0 downloads
About This Worksheet
A Physics worksheet focusing on the calculations, formulae, and understanding of alpha, beta, and gamma radiation for Year 9 students.
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Alpha/Beta/Gamma: Calculations & Formulae
Subject: ScienceGrade: Year 9
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Untitled Worksheet
Grade Year 9
A
Concept Review of Radioactive Particles
Answer the following questions to review your understanding of alpha, beta, and gamma radiation.
1.
Define alpha radiation and describe its basic properties.
[2 marks]2.
Explain how beta particles are produced during radioactive decay.
[2 marks]3.
List two safety precautions when handling gamma radiation sources.
[2 marks]B
Calculations Involving Radioactive Decay
Use the formula N = N₀ × (1/2)^{t / T}, where N is the remaining nuclei, N₀ is the initial nuclei, t is time, and T is the half-life. Show all working.
1.
A sample contains 10,000 nuclei of a radioactive isotope with a half-life of 5 hours. How many nuclei remain after 15 hours?
[4 marks]2.
Calculate the decay constant (λ) for a radioactive substance with a half-life of 8 hours. (Use λ = ln(2) / T).
[3 marks]C
Practical and Theoretical Applications
Answer the following questions based on practical applications and safety precautions related to radioactivity.
1.
Describe a safe laboratory procedure for handling a sample of alpha-emitting material.
[3 marks]2.
Identify a real-world application of gamma radiation in industry or medicine.
[2 marks]D
Data Analysis and Interpretation
Read the scenario and answer the questions.
1.
A radioactive source emits gamma radiation and has a measured activity of 500 Becquerel (Bq). After 3 hours, the activity drops to 125 Bq. What is the half-life of this isotope?
[4 marks]E
Exam-Style and Industry Applications
Answer the following questions with detailed explanations.
1.
Explain the differences in penetration and ionising ability between alpha, beta, and gamma radiation. Discuss their implications for safety and medical use.
[6 marks]Quick Actions
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Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet