Font size
WorksheetsS3 Nuclear
Total questions: 22
Worksheet time: 14mins
What is a beta particle made of?
One proton
A helium nucleus
A fast moving electron
One proton and one neutron
Of the main types of radiation emitted from naturally radioactive isotopes, which is the hardest to block?
Alpha decay
Gamma decay
Beta decay
They are all blocked using the same method
A helium nucleus
Gamma rays
Electrons
A gamma ray is described as
high frequency electromagnetic radiation
fast moving electron
a helium nucleus
two proton and two neutrons
What is the unit for activity?
Bq
Sv
Gy
s
What is the unit for absorbed dose?
Bq
Gy
Sv
Decays
Which type of radiation is used for radioactive tracers?
Alpha
Beta
Gamma
Which form of radiation is the most highly energetic, being stopped only by lead or thick concrete?
alpha
beta
gamma
neutrino
Which form of radiation is the lowest energy, composed of a helium nucleus and being stopped by a piece of paper?
alpha
beta
gamma
neutrino
Which form of radiation is an electron and can be stopped by a sheet of aluminum?
alpha
beta
gamma
neutrino
Which gas is the most common source of background radiation
Radium
Radio
Radon
Rubidium
A student measures the background count three times and gets these readings 20, 23 and 26 counts per second. Which of these is the correct average count?
3
22
23
51
which answer best states the method of detecting radiation
A camera
X-Ray machine
A GM tube
Laser
What is the most common source of background radiation?
Radium
Nuclear waste
Radon
Cosmic rays
Why is the background radiation from cosmic rays relatively low for most people?
Our clothes protect us.
The atmosphere absorbs a lot of cosmic rays.
We are too far from the Sun.
Satellites reflect them back into space.
Which particle has a positive electrical charge?
proton
neutron
electron
Which particles make up the nucleus of an atom? (you can choose more than one answers)
proton
electron
neutron
The size of the negative charge of an electron is exactly the same as the size of the positive charge on a proton. What is the overall charge of the helium atom shown in the diagram?
positive
negative
neutral
A radioactive source decays 120 times in one minute, calculate the activity of the source.
(a)
How long does it take for a radioactive source with an activity of 2 kBq to decay 40,000 times?
(a)
What is the symbol for absorbed dose?
H
D
E
m
