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WorksheetsRadiation - Knowledge quiz
Total questions: 18
Worksheet time: 9mins
What is ionisation?
When an atom splits in half.
When an atom releases a neutron.
The gain or loss of an electron from an atom.
The atom releases heat.
The unit of Activity is the
Gray
Becquerel
Sievert
Hertz
The unit of absorbed dose is
Gray
Becquerel
Sievert
Hertz
The unit of equivalent dose is
Gray
Becquerel
Sievert
Hertz
An alpha particle is
2 protons and 2 neutrons.
a fast moving electron.
an electromagnetic wave.
the number of decays per second.
A beta particle is
2 protons and 2 neutrons.
a fast moving electron.
an electromagnetic wave.
the number of decays per second.
Gamma radiation is
2 protons and 2 neutrons.
a fast moving electron.
an electromagnetic wave.
the number of decays per second.
A neutral atom ionised by an alpha particle will
become positive
become negative
remain neutral
emit neutrons and energy
A neutral atom ionised by a beta particle will
become positive
become negative
remain neutral
emit neutrons and energy
The relative charge of an alpha particle is
+1
0
-1
+2
The relative charge of a beta particle is
+1
0
-1
+2
The number of decays per second is known as
the absorbed dose.
the equivalent dose.
the half life.
the activity
The average annual background radiation in the UK is
1 mSv
2.2 mSv
20 mSv
100 mSv
The annual effective dose limit for members of the public in the UK is
1 mSv
2.2 mSv
20 mSv
100 mSv
The annual effective dose limit for radiation workers in the UK is
1 mSv
2.2 mSv
20 mSv
100 mSv
The time taken for the activity of a source to decrease by half is known as the
absorbed dose
equivalent dose rate
background radiation.
half life
A large nucleus splitting into smaller nuclei and releasing energy is an example of a
fusion reaction
fission reaction
chain reaction
ionistation
Small nuclei combining into a large nucleus and releasing energy is an example of a
fusion reaction
fission reaction
chain reaction
ionistation
