Background radiation (Edexcel GCSE Physics Combined Science): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Background radiation
Background radiation
Ionising radiation naturally present in environment
Ionising radiation effect
Ionising radiation effect
Makes atoms lose/gain electrons, become charged (ionised)
Cosmic rays
Cosmic rays
Radiation from space, sun and stars
Radon gas
Radon gas
Radioactive gas from ground, esp. granite areas
Natural sources of background radiation
Natural sources of background radiation
Cosmic rays, rocks/soil, radon gas, living things
Artificial sources of background radiation
Artificial sources of background radiation
Medical (X-rays, radiotherapy), nuclear power, weapons tests
Radiation dose unit
Radiation dose unit
Sieverts (Sv) or millisieverts (mSv)
Irradiation
Irradiation
Exposure to radiation from nearby source
Irradiation effect on object
Irradiation effect on object
Does not make object radioactive
Prevent irradiation - storage
Prevent irradiation - storage
Lead-lined boxes that absorb radiation
Prevent irradiation - monitoring
Prevent irradiation - monitoring
Photographic film badges track exposure dose
Contamination
Contamination
Radioactive particles on/in object or person
Prevent contamination
Prevent contamination
Gloves, tongs, protective suits, proper cleaning/disposal
Irradiation vs contamination difference
Irradiation vs contamination difference
Irradiation: exposed but not radioactive; Contamination: radioactive particles remain on/in object
Jobs with higher radiation exposure
Jobs with higher radiation exposure
Radiographers, nuclear power workers