Background radiation (AQA GCSE Physics): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
Background radiation definition
Background radiation definition
Low-level radiation that exists around us all the time
Two main types of background radiation sources
Two main types of background radiation sources
Natural sources and man-made sources
Biggest single source of background radiation
Biggest single source of background radiation
Radon gas (50%)
What radon gas forms from
What radon gas forms from
Uranium decay in rocks
What radon gas emits when it decays
What radon gas emits when it decays
Alpha particles
UK area with higher natural radon levels
UK area with higher natural radon levels
Cornwall
Rock type that produces more radon
Rock type that produces more radon
Granite rocks
Unit used to measure radiation dose
Unit used to measure radiation dose
Sieverts (Sv)
Conversion: Sv equals how many mSv?
Conversion: Sv equals how many mSv?
mSv
Background radiation dose per hour
Background radiation dose per hour
mSv per hour
Radiation dose that can be fatal
Radiation dose that can be fatal
mSv ( Sv)
% of background radiation from cosmic rays
% of background radiation from cosmic rays
10%