Radioactivity

• What are the three types of radioactivity?

  Alpha

  Beta

  Gamma
• What is the make up of alpha radiation?

  Helium nucleus
• What is the make up of beta radiation?

  High energy electron
• What is the makeup of gamma radiation?

  EM Wave
• What is the penetrating power of alpha?

  Low - Absorbed by paper
• What is the penetrating power of beta?

  Medium - Absorbed by aluminium
• What is the penetrating power of gamma?

  High - Reduced by thick lead
• What is the ionising power of alpha?

  Very ionising
• What is the ionising power of beta?

  Medium
• What is the ionising power of gamma?

  Less ionising