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Pregunta 1
Pregunta
What happens in ionisation?
Respuesta
-
Radiation causes nuclear fission between between atoms
-
Radiation can knock out electrons in atoms so they become charged (ions) as they lose an electron
Pregunta 2
Pregunta
Half life:
Respuesta
-
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
Pregunta 3
Pregunta
Half life is unpredictable yet we can predict how much will decay
Respuesta
- True
- False
Pregunta 4
Pregunta
Half life isn't random; it can be predicted when a sample will decay
Respuesta
- True
- False
Pregunta 5
Pregunta
Which are uses of radiation?
Respuesta
-
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
-
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
Pregunta 6
Pregunta
Beta radiation is:
Respuesta
-
an electron
-
a neutron
-
a ray
Pregunta 7
Pregunta
Beta radiation has ...
Respuesta
-
a -1 charge
-
a +2 charge
Pregunta 8
Pregunta
Alpha radiation has:
Respuesta
-
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
Pregunta 9
Pregunta
Gamma rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Respuesta
- True
- False
Pregunta 10
Pregunta
Beta rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Respuesta
- True
- False
Pregunta 11
Pregunta
Gamma rays would be emitted after alpha and/or beta particles
Respuesta
- True
- False
Pregunta 12
Pregunta
The most ionising (turning atoms into ions) radiation is
Respuesta
-
Gamma
-
Alpha
-
Beta
Pregunta 13
Pregunta
The least ionising* radiation is:
* = Ionising: turning atoms into charged particles/ ions
Respuesta
-
Gamma
-
Beta
-
Alpha
Pregunta 14
Pregunta
Gamma is:
Respuesta
-
the least ionising form of radiation
-
the most ionising form of radiation
-
the least penetrating form of radiation
-
the most penetrating form of radiation
Pregunta 15
Pregunta
Alpha radiation is
Respuesta
-
the least ionising
-
the most ionising
-
the least penetrating
-
the most penetrating
Pregunta 16
Pregunta
Beta radiation is
Respuesta
-
the most ionising
-
the least ionising
-
the most penetrating
-
in between alpha and gamma
-
the least penetrating
Pregunta 17
Pregunta
Which is the odd one out?
Respuesta
-
Gamma
-
Alpha
-
Beta
Pregunta 18
Pregunta
An alpha particle is a helium nucleus
Respuesta
- True
- False
Pregunta 19
Pregunta
Gamma rays are the least ionising because
Respuesta
-
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
Pregunta 20
Pregunta
Ionisation happens when particles (alpha or beta) collide with atoms, knocking out electrons, meaning they are now charged (ions).
Respuesta
- True
- False
Pregunta 21
Pregunta
Gamma rays are the most ionising.
Respuesta
- True
- False
Pregunta 22
Pregunta
Alpha particles are quite large (and slow)
Respuesta
- True
- False
Pregunta 23
Pregunta
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
Respuesta
- True
- False
Pregunta 24
Pregunta
Since alpha particles are quite large, they are more likely to collide with atoms and knock out their electrons
Respuesta
- True
- False
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