Course content

66 lessons

5.1.1-5.1.2 · The nuclear model of the atom

0/10

5.2.1-5.2.2 · Detection of radioactivity and the three types of emission

0/10

5.2.3-5.2.4 · Radioactive decay, fission and fusion

0/10

5.2.5-5.2.6 · Half-life and safety precautions

0/11

Finding half-life from a decay curve

12m

Uses of radioactivity: smoke alarms and thickness control

11m

Uses of radioactivity: medicine, sterilising and food

11m

Effects of ionising radiation on living things

10m

Moving, using and storing radioactive materials safely

10m

Reducing exposure: time, distance and shielding

11m

Half-life and safety: practice

Half-life and safety: exam practice

15m

Half-life and safety: summary

6.1.1-6.1.2 · Earth and the Solar System

0/13

6.2.1-6.2.3 · Stars and the Universe

0/12

5.2.5-5.2.6 · Half-life and safety precautionsLesson 2 of 11Free preview

Finding half-life from data

Take the background away first, then find how long the count rate takes to halve.