KittyG-S
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Science (Physics) Quiz on Radioactivity, created by KittyG-S on 25/05/2014.

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Radioactivity

Question 1 of 24

1

What happens in ionisation?

Select one of the following:

  • Radiation causes nuclear fission between between atoms

  • Radiation can knock out electrons in atoms so they become charged (ions) as they lose an electron

Explanation

Question 2 of 24

1

Half life:

Select one of the following:

  • half the time it takes for all nuclei in a radioactive sample to decay

  • half the time it takes for a radioactive sample to decay

  • the time taken for half the number of nuclei in a radioactive sample to decay

  • the time taken for half of the radioactive sample to decay

Explanation

Question 3 of 24

1

Half life is unpredictable yet we can predict how much will decay

Select one of the following:

  • True
  • False

Explanation

Question 4 of 24

1

Half life isn't random; it can be predicted when a sample will decay

Select one of the following:

  • True
  • False

Explanation

Question 5 of 24

7

Which are uses of radiation?

Select one or more of the following:

  • X-rays and killing cancers

  • Preserving food i.e killing its bacteria

  • Sterilising medical equipment

  • Preserving water

  • Powering houses

  • Carbon/ uranium dating

  • Thickness monitoring

  • Radioactive trackers for environmental and medical use

  • Smoke detectors

  • Powering heat

Explanation

Question 6 of 24

1

Beta radiation is:

Select one of the following:

  • an electron

  • a neutron

  • a ray

Explanation

Question 7 of 24

1

Beta radiation has ...

Select one of the following:

  • a -1 charge

  • a +2 charge

Explanation

Question 8 of 24

1

Alpha radiation has:

Select one of the following:

  • a +2 charge with 2 protons and 2 neutrons

  • a -1 charge because it is an electron

  • no mass because it is a ray

Explanation

Question 9 of 24

1

Gamma rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)

Select one of the following:

  • True
  • False

Explanation

Question 10 of 24

1

Beta rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)

Select one of the following:

  • True
  • False

Explanation

Question 11 of 24

1

Gamma rays would be emitted after alpha and/or beta particles

Select one of the following:

  • True
  • False

Explanation

Question 12 of 24

1

The most ionising (turning atoms into ions) radiation is

Select one of the following:

  • Gamma

  • Alpha

  • Beta

Explanation

Question 13 of 24

1

The least ionising* radiation is:
* = Ionising: turning atoms into charged particles/ ions

Select one of the following:

  • Gamma

  • Beta

  • Alpha

Explanation

Question 14 of 24

1

Gamma is:

Select one or more of the following:

  • the least ionising form of radiation

  • the most ionising form of radiation

  • the least penetrating form of radiation

  • the most penetrating form of radiation

Explanation

Question 15 of 24

2

Alpha radiation is

Select one or more of the following:

  • the least ionising

  • the most ionising

  • the least penetrating

  • the most penetrating

Explanation

Question 16 of 24

2

Beta radiation is

Select one of the following:

  • the most ionising

  • the least ionising

  • the most penetrating

  • in between alpha and gamma

  • the least penetrating

Explanation

Question 17 of 24

1

Which is the odd one out?

Select one of the following:

  • Gamma

  • Alpha

  • Beta

Explanation

Question 18 of 24

1

An alpha particle is a helium nucleus

Select one of the following:

  • True
  • False

Explanation

Question 19 of 24

1

Gamma rays are the least ionising because

Select one of the following:

  • they are a ray and tend to pass through atoms rather than collide with them

  • they move around atoms and don't collide with them

Explanation

Question 20 of 24

1

Ionisation happens when particles (alpha or beta) collide with atoms, knocking out electrons, meaning they are now charged (ions).

Select one of the following:

  • True
  • False

Explanation

Question 21 of 24

1

Gamma rays are the most ionising.

Select one of the following:

  • True
  • False

Explanation

Question 22 of 24

1

Alpha particles are quite large (and slow)

Select one of the following:

  • True
  • False

Explanation

Question 23 of 24

1

Since alpha particles are quite large, this means they struggle to pass through paper or more then 5mm of air as they are too big to do so

Select one of the following:

  • True
  • False

Explanation

Question 24 of 24

1

Since alpha particles are quite large, they are more likely to collide with atoms and knock out their electrons

Select one of the following:

  • True
  • False

Explanation

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