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WorksheetsNuclear Radiation and Radioactivity
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
Which type(s) of radiation would be affected by a magnet?
a)
alpha only
b)
beta only
c)
alpha and beta
d)
gamma only
2.
Name the instrument used to detect radioactivity.
a)
voltmeter
b)
ohmeter
c)
seismograph
d)
geiger counter
3.
Which type of radiation releases an electron?
a)
Alpha radiation
b)
Beta radiation
c)
Gamma radiation
d)
Theta radiation
4.
In order of most to least penetrating radiation we have
a)
Alpha , Beta, Gamma
b)
Beta , Gamma , Alpha
c)
Gamma, Beta, Alpha
d)
Gamma, Alpha, Beta
5.
_______________ is the process by which unstable atoms emit radiation until they become stable.
a)
Radiation
b)
Chemical Reaction
c)
Radioactive Decay
d)
Isotopes
6.
An isotope of an element has the same number of _________, but a different number of _________.
a)
Protons, electrons
b)
Protons, neutrons
c)
Electrons, neutrons
d)
Neutrons, protons
7.
Which particles make up the nucleus of an atom?
a)
protons and neutrons
b)
electrons and protons
c)
electrons, protons, and neutrons
d)
electrons and neutrons
8.
In a nuclear reactor, electricity is produced from what element?
a)
Plutonium
b)
Uranium 235
c)
Radon 220
d)
Lead 232
9.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
10.
When nuclei decay, massive amounts of __________ is released.
a)
energy
b)
electrons
c)
protons
d)
neutrons
11.
What type of decay is shown here
23892U ---> 23490Th + 42He.
a)
alpha
b)
beta
c)
gamma
12.
When a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element....
a)
remains the same
b)
decreases by one.
c)
increases by one.
d)
increases by two.
13.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
14.
Finish this equation
20983Bi--> _______ + 20581Tl
a)
42He
b)
0-1e
c)
y
15.
How do nuclear power-plants work?
a)
Fusion
b)
Half-life
c)
Fission
d)
Fusion or fission
16.
Takes two small nuclei and combines them into a larger nucleus
a)
fission
b)
fusion
17.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
half-life
d)
gamma radiation
18.
Where does fusion occur naturally?
a)
Underwater
b)
All around us
c)
In the radioactive waste
d)
On the sun
19.
Identify elements A and B and the process, C, in the illustration below.
a)
Deuterium, Tritium, Nuclear Fusion
b)
Deuterium, Tritium, Nuclear Fission
c)
Tritium, Hydrogen, Nuclear Fusion
d)
Deuterium, Hydrogen, Nuclear Fission
20.
A nuclear fission reaction occurs when a uranium-235 atom is bombarded with a neutron. This reaction is used to produce energy in a nuclear power plant. Why is it not possible to carry out a nuclear fusion reaction in a nuclear reactor?
a)
A fusion reaction releases harmful rays
b)
A fusion reaction is difficult to control
c)
A fusion reaction requires extremely low temperature and pressure
d)
A fusion reaction requires extremely high temperature and pressure
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