Zusammenfassung der Ressource
Radioactivity
- Particles
- Alpha
- Skin and paper
- 2 protons twos neutrons
- Helium atom without electrons
- When alpha gains two
electrons it becoems a
helium atom and is no
longer ionising
- Beta
- Stopped by aluminium
- One electron configuration
- High speed electron
- Gamma
- Most dangerous outside body
- Electromagnetic wave
- Stopped Lead and concrete
- Short wave length
- Ionisation
- When radiation passes an atom it removes an outer electron, making the target atom an ion
- Uses
- Radiotherapy
- Destroy cancer cells
- Tracers
- find leaks in underground pipes
- track dispersal of waste
- Smoke Alarms