JON CHASE:'The decay of these unstable elements is known as ionising radiation. 'There are three main types - alpha, beta or gamma. JON CHASE:'Gamma radiation is pure energy, 'but alpha and beta ...

After watching the clip, ask students to research the three types of ionising radiation and how they can ... AQA, WJEC KS4/GCSE in England and Wales, CCEA GCSE in Northern Ireland and SQA National ...