Radioactivity Flashcards
1
Q
What is a radioactive substance?
A
A substance with UNSTABLE NUCLEUS and that becomes MORE STABLE by EMITTING RADIATION.
2
Q
What are the 4 types of radiation?
A
Gamma, beta, alpha radiation, neutrons
3
Q
What are the 7 sources for background radiation?
A
1) COSMIC RADIATION from SUN and SUPERNOVAES
2) FOOD/DRINK as ELEMENTS can be radioactive.
3) RADON GAS seeping from underground
4) ROCKS
5) MEDICAL X-RAYS
6) POWER STATIONS
7) Other MISCELLANEOUS SOURCES like NUCLEUR WEAPONs or mishaps like CHERNOBYL
4
Q
What is the unit for measuring radiation?
A
Sieverts
5
Q
What instrument do we measure radiation with?
A
Geiger Counter
