Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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The most
penetrating type of radiation is the ____. a. | alpha particle | c. | gamma ray | b. | beta particle | d. | uranium | | | | |
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2.
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A helium
nucleus with two protons and two neutrons is called a(n) ____. a. | alpha
particle | c. | electroscope | b. | beta particle | d. | gamma ray | | | | |
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3.
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Negatively
charged particles emitted from a nucleus at a high speed are ____. a. | alpha
particles | c. | gamma
rays | b. | beta
particles | d. | X
rays | | | | |
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4.
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The
discovery of radioactivity by Henri Bequerel involved a ____. a. | bubble
chamber | c. | Geiger
counter | b. | chain reaction | d. | photographic plate | | | | |
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5.
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The three
types of nuclear radiation in increasing order of penetrating power are ____. a. | alpha, beta,
gamma | c. | X ray, beta,
gamma | b. | alpha, gamma, beta | d. | X ray, gamma, beta | | | | |
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6.
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Radioactive
tracers are useful in ____. a. | calculating the ages of fossils | c. | fueling nuclear reactions | b. | determining medical
problems | d. | treating brain
tumors | | | | |
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7.
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Both a
fusion reaction and a fission reaction ____. a. | causes chain reactions | c. | take place at room temperature | b. | produce
energy | d. | use hydrogen as a
fuel | | | | |
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8.
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Which of the
following elements is most likely to be produced during a nuclear fusion reaction in the
Sun? a. | helium-4 | c. | uranium-235 | b. | hydrogen-1 | d. | uranium-238 | | | | |
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9.
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When an
electroscope is given a(n) ____, its leaves repel each other and spread apart. a. | moving
particle | c. | negative
charge | b. | radioactive sample | d. | positive charge | | | | |
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10.
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If a source
of radiation is placed near ____ cells, atoms in the cells can be ionized and can die or stop
growing. a. | thyroid | c. | heart | b. | fat | d. | cancer | | | | |
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