P4 Revision

Flashcards Revision-physics/ radiation 

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Radioactive substances decay naturally, what do they give off?
Alpha, beta and gamma radiation.
1 of 10
Radioactive decay is a random process so it is not effected by what?
Physical conditions such as temperature.
2 of 10
What is the definition of a half-life?
The average time that it takes for half of the nucli present to decay.
3 of 10
Which element has the largest stable nucleus?
Lead (Pb)
4 of 10
An alpha particle is the same as what?
A helium nucleus.
5 of 10
What is a beta particle?
A fast-moving electron.
6 of 10
How is a beta particle emitted from a nucleus?
A neutron changes into a proton and an electron.
7 of 10
Why is Gamma radiation different from alpha and beta radiation?
Because it is an electromagnetic wave.
8 of 10
What radioactive particles can be used in smoke detectors?
Alpha particles
9 of 10
What could be used to detect gamma radiation used in an industrial tracer?
A Geiger counter.
10 of 10

Other cards in this set

Card 2

Front

Radioactive decay is a random process so it is not effected by what?

Back

Physical conditions such as temperature.

Card 3

Front

What is the definition of a half-life?

Back

Preview of the front of card 3

Card 4

Front

Which element has the largest stable nucleus?

Back

Preview of the front of card 4

Card 5

Front

An alpha particle is the same as what?

Back

Preview of the front of card 5
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