Nuclear Reactions Worksheet Template Page 2
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3Name: ________________________
ID: A
____ 12. In general, the nucleus of a small atom is stable. Therefore, over very short distances, such as those in a small
nucleus,
a.
the strong nuclear force is much greater than the electric force.
b.
the electric force is much greater than the strong nuclear force.
c.
the strong nuclear force equals the electric force.
d.
the strong nuclear force and the electric force are both attractive.
____ 13. During nuclear fission, great amounts of energy are produced from
a.
very small amounts of mass.
c.
a series of chemical reactions.
b.
tremendous amounts of mass.
d.
particle accelerators.
____ 14. Which of the following is an advantage of using nuclear power plants to produce electricity?
a.
Nuclear power plants do not pollute the air.
b.
Nuclear power plants produce wastes that are easy to dispose.
c.
Nuclear power plants produce more stable wastes compared to fossil fuel combustion.
d.
all of the above
____ 15. Which of the following is NOT a way that water is used in a nuclear power station?
a.
Water cools the steam in the turbine chamber.
b.
Water is changed to steam by heat released by the reactor core.
c.
Steam makes the turbines rotate.
d.
Running water cools the rotating turbines.
____ 16. Many people work near a source of nuclear radiation. To detect the amount of exposure they have to
radiation, they most likely will use a
a.
Flux capacitor
c.
radon kit.
b.
Dosimeter
d.
lead shield.
____ 17. Suppose three neutrons are released when an atom in a sample of fissionable nuclei undergoes fission. Each
of these neutrons has enough energy to cause another fission reaction in another nucleus of the material. If
the reaction is not controlled, how many atoms will have undergone fission after a series of five additional
nuclear fissions?
a.
15
c.
243
b.
18
d.
729
Completion
Complete each sentence or statement.
18. Francium has 36 isotopes, but only francium-223 occurs in nature. Francium-223 spontaneously emits
particles and energy, so francium-223 is a(an) ____________________ of francium.
19. An alpha particle is the same as a(an) ____________________ nucleus.
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20. In the symbol
He, the superscript 4 is the _________________________ for helium, and the subscript 2 is
2
the _________________________ for helium.
21. You want to be shielded from all three types of nuclear radiation. If you find shielding that blocks
____________________ radiation, then it will most likely also block the other two types.
22. When a human body is exposed to external nuclear radiation, the amount of tissue damage depends on the
____________________ power of the radiation.
23. A sample of a radioisotope had a mass of 100.0 g. After exactly 24 days, 6.25 g of the sample remained. The
half-life of the isotope is ____________________ days.
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