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Grade 10
Physics
10. Nuclear Physics
10.2 Radiation, Types and effects
Radiation Types and Effects: Alpha, Beta, and Gamma Explained
Explore the properties, penetrating power, and biological effects of the three types of nuclear radiation, and discover how radioactive decay and half-life govern the behaviour of unstable nuclei.
What You'll Learn
Alpha, beta, and gamma radiation differ in charge, mass, and penetration.
Half-life governs how quickly radioactive samples lose their activity.
Ionising radiation damages DNA, potentially causing mutations and cancer.
ALARA, shielding, and distance are key radiation protection strategies.
What You'll Practice
1
Students calculate remaining activity using the half-life decay formula.
2
Questions compare biological damage from alpha versus gamma radiation.
3
Learners identify radiation types, properties, shielding, and decay changes.
Why This Matters
Understanding radiation types and their biological effects is essential for informed decision-making in medicine, energy, and environmental safety throughout students' lives.
This Unit Includes
Practice exercises
Learning resources
Skills
Radioactive Decay
Half-Life
Ionising Radiation
Radiation Protection
Nuclear Physics
SK Curriculum Aligned