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Frage 1
Frage
What happens in ionisation?
Antworten
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Radiation causes nuclear fission between between atoms
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Radiation can knock out electrons in atoms so they become charged (ions) as they lose an electron
Frage 2
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Half life:
Antworten
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half the time it takes for all nuclei in a radioactive sample to decay
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half the time it takes for a radioactive sample to decay
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the time taken for half the number of nuclei in a radioactive sample to decay
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the time taken for half of the radioactive sample to decay
Frage 3
Frage
Half life is unpredictable yet we can predict how much will decay
Antworten
- True
- False
Frage 4
Frage
Half life isn't random; it can be predicted when a sample will decay
Antworten
- True
- False
Frage 5
Frage
Which are uses of radiation?
Antworten
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X-rays and killing cancers
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Preserving food i.e killing its bacteria
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Sterilising medical equipment
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Preserving water
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Powering houses
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Carbon/ uranium dating
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Thickness monitoring
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Radioactive trackers for environmental and medical use
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Smoke detectors
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Powering heat
Frage 6
Frage
Beta radiation is:
Antworten
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an electron
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a neutron
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a ray
Frage 7
Frage
Beta radiation has ...
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a -1 charge
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a +2 charge
Frage 8
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Alpha radiation has:
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a +2 charge with 2 protons and 2 neutrons
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a -1 charge because it is an electron
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no mass because it is a ray
Frage 9
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Gamma rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Antworten
- True
- False
Frage 10
Frage
Beta rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Antworten
- True
- False
Frage 11
Frage
Gamma rays would be emitted after alpha and/or beta particles
Antworten
- True
- False
Frage 12
Frage
The most ionising (turning atoms into ions) radiation is
Antworten
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Gamma
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Alpha
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Beta
Frage 13
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The least ionising* radiation is:
* = Ionising: turning atoms into charged particles/ ions
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Gamma
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Beta
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Alpha
Frage 14
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Gamma is:
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the least ionising form of radiation
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the most ionising form of radiation
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the least penetrating form of radiation
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the most penetrating form of radiation
Frage 15
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Alpha radiation is
Antworten
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the least ionising
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the most ionising
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the least penetrating
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the most penetrating
Frage 16
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Beta radiation is
Antworten
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the most ionising
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the least ionising
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the most penetrating
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in between alpha and gamma
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the least penetrating
Frage 17
Frage
Which is the odd one out?
Antworten
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Gamma
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Alpha
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Beta
Frage 18
Frage
An alpha particle is a helium nucleus
Antworten
- True
- False
Frage 19
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Gamma rays are the least ionising because
Antworten
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they are a ray and tend to pass through atoms rather than collide with them
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they move around atoms and don't collide with them
Frage 20
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Ionisation happens when particles (alpha or beta) collide with atoms, knocking out electrons, meaning they are now charged (ions).
Antworten
- True
- False
Frage 21
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Gamma rays are the most ionising.
Antworten
- True
- False
Frage 22
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Alpha particles are quite large (and slow)
Antworten
- True
- False
Frage 23
Frage
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
Antworten
- True
- False
Frage 24
Frage
Since alpha particles are quite large, they are more likely to collide with atoms and knock out their electrons
Antworten
- True
- False
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