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WorksheetsPhysical science
Total questions: 10
Worksheet time: 30mins
Name
Class
Date
1.
What is the best description of what occurs in a fission reaction?
a)
energy is absorbed, & more stable elements are formed
b)
light nuclei form into heavier nuclei
c)
energy is released, and less stable elements are formed
d)
heavy nuclei split into lighter nuclei
2.
Four types of reactions are performed, each using the amount of reactants. Which reaction released the greatest amount of energy?
a)
fission reaction
b)
endothermic reaction
c)
fusion reaction
d)
exothermic reaction
3.
What change takes place in a nuclear fusion reaction?
a)
matter is converted to energy
b)
energy is converted to matter
c)
ionic bonds are converted to covalent bonds
d)
Covalent bonds are converted to ionic bonds
4.
The biggest disadvantage of using nuclear power to produce electricity is?
a)
Nuclear fission releases more air pollution than burning coal
b)
Nuclear waste must be safely stored for many years
c)
Nuclear fission produces less energy than burning coal or oil
d)
Nuclear waste must be incinerated
5.
What is an advantage of nuclear-fission reactor?
a)
A large amount of energy can be produced from a small amount of uranium.
b)
The power plants are only expensive if they require radiation shielding.
c)
The nuclear waste generated has a very long half-life.
d)
The products of fission reactions are often radioactive isotopes.
6.
What is the difference between fission and fusion?
a)
Fission combines small nuclei, while fusion combines large nuclei.
b)
Fission combines large nuclei, while fusion combines small nuclei.
c)
Fission splits large nuclei, while fusion combines small nuclei.
d)
Fission splits large nuclei, while fusion combines large nuclei.
7.
Nuclear fission occurs when:
a)
a nucleus divides spontaneously, with no apparent reason
b)
electrical forces inside a nucleus overpower nuclear forces
c)
we cut nuclei in two with a very small cutting device
d)
one nucleus bumps into another causing a chain reaction
8.
Alpha particles have...
a)
positive charged
b)
negative charged
c)
no charge
d)
radioactive charge
9.
A helium nucleus with two protons and two neutrons is called a(n) ____ particle
a)
alpha
b)
beta
c)
gamma
d)
lambda
10.
Each element with an atomic number greater than 83 is ____.
a)
stable
b)
synthetic
c)
lighter than air
d)
radioactive
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