P2d - Nuclear Radiation

P2d - Nuclear radiation

• In physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body.

P2d - Nuclear radiationIonising radiation

• Some types of radiation have enough energy to knock _________ out of _________ giving them a positive charge

• This is hazardous for living things as it can lead to mutations and cancer

Ionisation

Background radiation

Types of Radiation

Alpha

Beta

Gamma

Uses of radiation - Alpha

Smoke alarms• Smoke alarms

contain Americium 241, which emits __________ particles

• The alpha particles ___________ the air allowing a current to flow

• Smoke stops this current

Uses - beta and gammaBeta• To test thickness of paper

Gamma

• To check safety of welds joining metal together

• Used in radiotherapy treatment for cancer

• Sterilise medical equipment

Types of radiation - SummaryUsesIonisation

powerPenetration power

Type

Radioactive waste

Radioactive waste

• Radioactive waste is…

• It is hazardous because…

Disposing of radioactive waste

Disposal of radioactive waste• Waste can stay radioactive for thousands

of yearsBury in landfills

Reprocessing

Encase in glass & bury deep underground