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Physics GCSE AQA Higher > Radioactivity > Flashcards

Radioactivity Flashcards

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1
Q

What is a radioactive substance?

A

A substance with UNSTABLE NUCLEUS and that becomes MORE STABLE by EMITTING RADIATION.

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2
Q

What are the 4 types of radiation?

A

Gamma, beta, alpha radiation, neutrons

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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

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4
Q

What is the unit for measuring radiation?

A

Sieverts

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5
Q

What instrument do we measure radiation with?

A

Geiger Counter

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Physics GCSE AQA Higher (9 decks)

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