WorksheetsRadioactivity Quiz
Total questions: 25
Worksheet time: 13mins
Which type of radiation is the most penetrating?
Alpha
Beta+
Beta-
Gamma
Which type of radiation is a type of Electromagnetic Radiation?
Alpha
Beta-
Beta+
Gamma
Which type of radiation is represented here?
Alpha
Beta-
Beta+
Gamma
Which type of radiation involves a neutron breaking down into a proton and electron?
Alpha
Beta-
Beta+
Gamma
Which type of radiation involves the mass number of the decaying atom staying constant but the proton number decreasing by one.
Alpha
Beta-
Beta+
Gamma
An unstable atom is said to be...
(a)
Which of the following about Geiger and Marsden's experiment was not a finding?
Most of the alpha particles went straight through the gold atoms
A small number of alpha particles were reflected back
A small number of alpha particles were deflected
A small number of alpha particles were absorbed by the nucleus
Which Physicist argued that electrons could exist at different "energy levels"?
Bohr
Thompson
Mendeleev
Rutherford
Which of the following completes the sentence..."half-life is the..."
"length of time it takes the radioactivity to decrease by a half"
"length of time it takes for the first half of a substances atoms to decay"
"length of time it takes for half of an atom to decay"
"half of the time it takes for all of of the radioactive atoms to decay"
Here is the decay curve for C-14. How much of a sample of C-14 would be left if its age were 10,000 years?
40%
35%
30%
255
Why can't C-14 be used to determine the age of recently deceased objects?
Not enough of the C-14 would have decayed to give an accurate result
Too much of the C-14 would have decayed
C-14 does not start decaying until the organism has been dead for many years
C-14 is not part of living organisms
What type of radioactive source would be best for use as a medical tracer?
Alpha
Beta
Gamma
Why would a medical tracer require a short half-life?
Short half life sources are cheap
Reduces the chance of causing mutations
It is needed in the body for a long time
These sources are easier to pick up with a scanner
Why would doctors prefer to use multiple gamma rays when treating cancer?
Each individual ray can be made weaker but for a large total effect
Each individual ray can be made weaker for a reduced total effect
Each individual ray can be made stronger for an increased total effect
Each individual way can be made stronger for a reduced total effect
What process involves splitting nuclei?
Fission
Fusion
Decay
Transmutation
Which part of the nuclear reactor is responsible for reducing the rate of fission?
Graphite moderator
Boron Control Rods
Water
Uranium rods
What is this process?
Fission
Fusion
Decay
Transmutation
Why can't fusion be used on Earth as a means of generating electricity?
It would require too much energy
It would not release enough energy
There is not enough of a fuel supply
It would produce too much radioactive waste
Which of the following are reasons Fusion cannot be used on Earth as a means of generating electricity?
Requires too high a temperature
Requires too high pressure
Produces too much waste
Too much risk of an explosion
Which of the following is not a stage involved in the disposal of radioactive waste?
Left to cool in water
Encased in reinforced concrete
Buried deep underground
Treated with anti-radioactive chemicals
The spontaneous disintegration of unstable nuclei is called...
Radioactivity
Radiation
Fission
Fusion
Which of the following best explains alpha particles lack of penetrating power
The particles are too large and so collide with particles in the air
The alpha particles have too much energy and so are attracted by other particles
They have a charge of 2+
They do not consist of electrons
Fast moving electrons are known as...
Beta- particles
Beta+ particles
Alpha particles
Gamma rays
Alpha emission occurs in atoms with...
an atomic number greater than 83
an atomic number of exactly 83
an atomic number of less than 83
Why can only alpha radiation be used in smoke detectors
It is required to ionise the air in a detector and be absorbed by the smoke
It is the only type of radiation which would not be absorbed by the smoke
It is the least dangerous type of rdiation
Other types of radiation would be able to leave the detector and pose a threat to the people in the house
