Public learning track
Half-Life and Radioactive Activity
10th Grade · Science · UK GCSE
5 lessons
Goal
Explain the random nature of radioactive decay, determine half-life graphically, and calculate remaining activity and decay ratios.
Featured Diagrams
Radioactive Activity and Count Rate in Becquerels
5 lessons
0 of 5 done
- 1Radioactive Activity and Count Rate in BecquerelsUp nextStart
- 2The Random Nature of Decay and Half-Life ConceptPremiumNot started yet
- 3Determining Half-Life from Radioactive Decay GraphsNot started yet
- 4Calculating Activity and Remaining Nuclei After Half-LivesNot started yet
- 5Net Decline Calculations and Fractional ActivityNot started yet
Standards Covered
- UK-GCSE-SCIENCE-PHYS-AST-02General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10Absorption and emission of ionizing radiations and of electrons and nuclear particles
- UK-GCSE-SCIENCE-PHYS-AST-02-04General Certificate of Secondary Education (GCSE) · Science · Year 11 (GCSE) · Grade 10explain the concept of half-life and how this is related to the random nature of radioactive decay
Curriculum Framework
10th Grade · Science · UK GCSE
1
6 lessons
Density and States of Matter
Explain differences in density and changes of state using the particle model and calculate density for regular and irregular objects.
2
8 lessons
Internal Energy, Specific Heat, and Latent Heat
Explain thermal energy changes using the particle model and perform calculations involving specific heat capacity and specific latent heat.
3
4 lessons
Particle Motion and Gas Pressure
Explain the behaviour of gas particles and the qualitative relationship between temperature, kinetic energy, and pressure at constant volume.
4
5 lessons
Development and Structure of the Nuclear Atom
Describe how scientific evidence transformed the atomic model and recall the structure, relative scale, and mass distribution of the atom.
5
5 lessons
Subatomic Particles, Isotopes, and Ions
Relate atomic number, mass number, and electron configurations to isotopes, ion formation, and radiation absorption or emission.
6
5 lessons
Radioactive Emissions and Nuclear Equations
Compare alpha, beta, gamma, and neutron radiation and balance nuclear equations representing radioactive decay.
7
5 lessons
Half-Life and Radioactive Activity
Explain the random nature of radioactive decay, determine half-life graphically, and calculate remaining activity and decay ratios.
8
4 lessons
Radiation Hazards: Contamination and Irradiation
Compare the mechanisms, health hazards, and safety precautions associated with radioactive contamination and irradiation.
9
5 lessons
Mathematical Skills in Nuclear Physics
Apply mathematical principles to balance nuclear equations by mass and charge, and calculate net decline ratios over multiple half-lives.