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Question 1
Question
What happens in ionisation?
Answer
-
Radiation causes nuclear fission between between atoms
-
Radiation can knock out electrons in atoms so they become charged (ions) as they lose an electron
Question 2
Question
Half life:
Answer
-
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
Question 3
Question
Half life is unpredictable yet we can predict how much will decay
Answer
- True
- False
Question 4
Question
Half life isn't random; it can be predicted when a sample will decay
Answer
- True
- False
Question 5
Question
Which are uses of radiation?
Answer
-
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
Question 6
Question
Beta radiation is:
Answer
-
an electron
-
a neutron
-
a ray
Question 7
Question
Beta radiation has ...
Answer
-
a -1 charge
-
a +2 charge
Question 8
Question
Alpha radiation has:
Answer
-
a +2 charge with 2 protons and 2 neutrons
-
a -1 charge because it is an electron
-
no mass because it is a ray
Question 9
Question
Gamma rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Answer
- True
- False
Question 10
Question
Beta rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Answer
- True
- False
Question 11
Question
Gamma rays would be emitted after alpha and/or beta particles
Answer
- True
- False
Question 12
Question
The most ionising (turning atoms into ions) radiation is
Answer
-
Gamma
-
Alpha
-
Beta
Question 13
Question
The least ionising* radiation is:
* = Ionising: turning atoms into charged particles/ ions
Answer
-
Gamma
-
Beta
-
Alpha
Question 14
Question
Gamma is:
Answer
-
the least ionising form of radiation
-
the most ionising form of radiation
-
the least penetrating form of radiation
-
the most penetrating form of radiation
Question 15
Question
Alpha radiation is
Answer
-
the least ionising
-
the most ionising
-
the least penetrating
-
the most penetrating
Question 16
Question
Beta radiation is
Answer
-
the most ionising
-
the least ionising
-
the most penetrating
-
in between alpha and gamma
-
the least penetrating
Question 17
Question
Which is the odd one out?
Answer
-
Gamma
-
Alpha
-
Beta
Question 18
Question
An alpha particle is a helium nucleus
Answer
- True
- False
Question 19
Question
Gamma rays are the least ionising because
Answer
-
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
Question 20
Question
Ionisation happens when particles (alpha or beta) collide with atoms, knocking out electrons, meaning they are now charged (ions).
Answer
- True
- False
Question 21
Question
Gamma rays are the most ionising.
Answer
- True
- False
Question 22
Question
Alpha particles are quite large (and slow)
Answer
- True
- False
Question 23
Question
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
Answer
- True
- False
Question 24
Question
Since alpha particles are quite large, they are more likely to collide with atoms and knock out their electrons
Answer
- True
- False
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