English National Curriculum - Science

Types of nuclear radiation

Mission Objectives

State the 3 types of nuclear radiation.

Rank the range and ionising ability of the 3 different types of radiation.

Describe the penetration power of the 3 types of radiation.

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Keywords

Words and meanings to learn

penetrating power

The ability of a type of radiation to pass through materials.

alpha radiation

consists of alpha particles, which are made up of 2 protons and 2 neutrons (the same as a helium nucleus)

beta radiation

Beta radiation consists of beta particles, which are fast-moving, high-energy electrons

ionising power

the ability of radiation to knock electrons out of atoms, turning them into ions.

gamma radiation

Gamma radiation is a type of electromagnetic wave with no mass and no charge

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This lesson has been written by

Samantha Batch

Samantha is an accomplished science educator whose current work centres on curriculum design and professional development, supporting teachers to deliver high-quality science education through evidence-informed approaches. She is a former Head of Chemistry and Sixth Form Tutor with extensive Key Stage 4 and 5 experience, and has worked as an AQA examiner, giving her valuable insight into assessment standards and what students need to succeed.

Samantha has written the complete KS4 Science curriculum, fully aligned with the AQA GCSE Science: Trilogy specification. Covering biology, chemistry and physics, the curriculum is carefully sequenced so that students build knowledge cumulatively and see clear connections between concepts across the three sciences. Drawing on her experience as an examiner and on research into effective teaching, she has designed it to embed retrieval practice, clear explanation, worked examples and the required practicals throughout, preparing students for the demands of the GCSE exams. Grounded in the realities of the classroom, the curriculum is rigorous for students and manageable for busy teachers.

In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket. 

Required Resources

Geiger-Müller Counter (Geiger Counter):

How it works: This device is used in class demonstrations to measure radiation from different sources. When brought near a radioactive source, the Geiger counter produces clicks or a visual display representing radiation levels.

Application: This model can show the different penetration abilities of alpha, beta, and gamma radiation:

Place paper over a source to stop alpha radiation.

Use aluminium to stop beta radiation.

Demonstrate that gamma radiation requires thicker shielding, such as lead

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