WorksheetsF5 PHY CHP 5 RADIOACTIVITY
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
A radioactive nucleus emits a β-particle.
What happens to the proton number (atomic number) of the nucleus?
a)
It stays the same.
b)
It increases by 1.
c)
It decreases by 2.
d)
It decreases by 4.
2.
A nucleus of americium 24395Am emits an α-particle to form a nucleus of neptunium (Np).
Which equation represents this decay?
a)
b)
c)
d)
3.
Which type of radiation would be stopped by a sheet of paper?
a)
alpha
b)
beta
c)
positrons
d)
gamma
4.
Which type of radiation needs several metres of thick concrete to stop it?
a)
alpha
b)
beta
c)
positrons
d)
gamma
5.
What do we call the time taken for half the unstable nuclei in a sample to decay?
a)
half-life
b)
decay-time
c)
20 minutes
d)
exponential
6.
Which of these would not be a suitable use of gamma radiation?
a)
in smoke detectors
b)
to sterilise surgical instruments
c)
diagnosing leaks in pipes
d)
to detect cancers as a tracer)
7.
Which process involves the release of energy when joining together two smaller nuclei to make one larger nucleus?
a)
fusion
b)
fission
c)
exothermic
d)
synthesis
8.
Which process involves the release of energy when splitting a large nucleus into two, or more, smaller nuclei?
a)
fission
b)
fusion
c)
exofusion
d)
fissuring
9.
Which type of radiation would be the most suitable to help control the thickness of paper during its manufacture?
a)
alpha
b)
beta
c)
gamma
d)
x-rays
10.
Which type of radiation contains high-frequency electromagnetic waves?
a)
alpha
b)
beta
c)
positrons
d)
gamma
100 %
