928389
Questão 1
Questão
What happens in ionisation?
Responda
-
Radiation causes nuclear fission between between atoms
-
Radiation can knock out electrons in atoms so they become charged (ions) as they lose an electron
Questão 2
Questão
Half life:
Responda
-
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
Questão 3
Questão
Half life is unpredictable yet we can predict how much will decay
Responda
- True
- False
Questão 4
Questão
Half life isn't random; it can be predicted when a sample will decay
Responda
- True
- False
Questão 5
Questão
Which are uses of radiation?
Responda
-
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
Questão 6
Questão
Beta radiation is:
Responda
-
an electron
-
a neutron
-
a ray
Questão 7
Questão
Beta radiation has ...
Responda
-
a -1 charge
-
a +2 charge
Questão 8
Questão
Alpha radiation has:
Responda
-
a +2 charge with 2 protons and 2 neutrons
-
a -1 charge because it is an electron
-
no mass because it is a ray
Questão 9
Questão
Gamma rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Responda
- True
- False
Questão 10
Questão
Beta rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
Responda
- True
- False
Questão 11
Questão
Gamma rays would be emitted after alpha and/or beta particles
Responda
- True
- False
Questão 12
Questão
The most ionising (turning atoms into ions) radiation is
Responda
-
Gamma
-
Alpha
-
Beta
Questão 13
Questão
The least ionising* radiation is:
* = Ionising: turning atoms into charged particles/ ions
Responda
-
Gamma
-
Beta
-
Alpha
Questão 14
Questão
Gamma is:
Responda
-
the least ionising form of radiation
-
the most ionising form of radiation
-
the least penetrating form of radiation
-
the most penetrating form of radiation
Questão 15
Questão
Alpha radiation is
Responda
-
the least ionising
-
the most ionising
-
the least penetrating
-
the most penetrating
Questão 16
Questão
Beta radiation is
Responda
-
the most ionising
-
the least ionising
-
the most penetrating
-
in between alpha and gamma
-
the least penetrating
Questão 17
Questão
Which is the odd one out?
Responda
-
Gamma
-
Alpha
-
Beta
Questão 18
Questão
An alpha particle is a helium nucleus
Responda
- True
- False
Questão 19
Questão
Gamma rays are the least ionising because
Responda
-
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
Questão 20
Questão
Ionisation happens when particles (alpha or beta) collide with atoms, knocking out electrons, meaning they are now charged (ions).
Responda
- True
- False
Questão 21
Questão
Gamma rays are the most ionising.
Responda
- True
- False
Questão 22
Questão
Alpha particles are quite large (and slow)
Responda
- True
- False
Questão 23
Questão
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
Responda
- True
- False
Questão 24
Questão
Since alpha particles are quite large, they are more likely to collide with atoms and knock out their electrons
Responda
- True
- False
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