Physics P2 6.1 Observing nuclear radiation.

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What does a radioactive substance contain?
An unstable nuclei that become stable by emitting radiation.
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What are the three main types of radiation from radioactive substances?
Alpha, beta and gamma radiation.
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When does radioactive dec ay occur?
Radioactive decay is a random event, we cannot predict or influence when it happens.
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Where does background radiation come from?
Background radiation is from radioactive substances in the environment, or from space, or from devices such as X-ray machines.
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What is the basic structure of an atom?
The basic structure of an atom is a small central nucleus, made up of protons and neutrons, surrounded by electrons.
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How do the nuclei of radioactive substances become stable?
By radioactive decay, in this process they emit radiation and turn into other elements.
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Which part of an atom might emit alpha particles?
The nucleus.
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What happens to the rate of radioactive decay if the temperature is doubled?
It stays the same.
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Card 2

Front

What are the three main types of radiation from radioactive substances?

Back

Alpha, beta and gamma radiation.

Card 3

Front

When does radioactive dec ay occur?

Back

Preview of the front of card 3

Card 4

Front

Where does background radiation come from?

Back

Preview of the front of card 4

Card 5

Front

What is the basic structure of an atom?

Back

Preview of the front of card 5
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