2019 Unit 7 Review
Check your understanding
Which of the following statements is FALSE?
Our nuclear power plants use fission to heat water.
The most common fissile nuclear fuels are uranium-235 and plutonium-239.
The fuel assembly is made up of many fuel rods filled with uranium pellets.
Heavy water reactors use water which has one extra oxygen atom.
Control rods absorb neutrons to control the rate of the chain reaction.
Which of the following is NOT part of the nuclear fuel cycle?
What happens to the uranium solution which is pumped from the ground by in situ recovery?
It is sent to the processing facility so they can separate the uranium using a cyanide solution.
It is sent to the processing facility so they can heat it up and use fractional distillation to separate the uranium from the impurities.
It is sent to the processing facility to be processed into uranium yellowcake.
It is sent to the processing facility so they use the smelting process to separate the uranium from the ore.
It is sent to the processing facility where it is melted into uranium oxide pellets.
True or False: The equipment and tools they use inside a nuclear power plant is treated as low-level nuclear waste.
True or False: Nuclear energy is considered a non-renewable energy source.
True or False: The United States Navy has ships and submarines which are powered by nuclear energy.
The half-life of radon gas is approximately four days. Four weeks after the introduction of radon into a sealed room, the fraction of the original amount remaining is closest to
when control rods are dropped completely inside the fuel rods to shut down the reactor
is the warning light which did not work for Chernobyl
is the Tsunami warning system which failed to operate to warn Fukushima of the rising water
is what you should do if you see Mrs. Brown running away from a nuclear power plant
Which type of coal has the highest energy density?
Natural gas is primarily
Which type of mining is potentially the most harmful to human health?
Which of the following statements regarding petroleum is False?
it is formed from the decay of woody plants
it contains natural gas as well as oil
it migrates through pore spaces in rocks
it is separated in a fractional distillation tower based upon different boiling points of the hydrocarbons such as methane and gasoline
Which is NOT used in sustainable design in North America?
recycled building materials
an overhanging roof
windows on the northern wall
building materials with high thermal mass
Which of the following is NOT an example of a potentially renewable or nondepletable energy source?
One particularly large nuclear power plant produces about 400 kilocuries of krypton per year. Krypton has a half-life of 10 years. How radioactive will the krypton waste generated at the power plant be after 30 years?
Which of the following sources of energy does NOT employ the use of turbines?
Uranium-235 is used in nuclear reactors because
they are easy to mold into fuel pellets
they are fissionable
it is easily harvested from the ocean
it is capable of going through nuclear fusion
Inside a reactor, a neutron strikes a uranium atom nucleus, which splits, releasing a great deal of energy and sending fragments of the nucleus speeding away in different directions. The single sequence of events is best described as an example of
The planned Yucca Mountain long-term storage facility for high-level radioactive waste is located in the state of
Of the following power plant components, which one is ONLY found in nuclear power plants?
After the 2011 earthquake and tsunami that devastated some of Japan's east coast, the Fukushima Daiichi power plant experienced an uncontrolled fission reaction when coolant stopped circulating around fuel rods, and emergency control measures did not adequately halt the process. Thus, the plant experienced a partial
nuclear fusion reaction
Of the following alternative energy sources, which has the highest energy return on energy invested?
concentrated solar power
Which of the following would NOT be used to make biodiesel?
Which of the following is NOT used as a biomass fuel?
Compared to ordinary gasoline, one disadvantage of ethanol is its
higher carbon dioxide emissions
lower fuel efficiency per unit volume
higher carbon monoxide emissions
lower torque output
higher sulfur emissions
When burned, which of the following fossil fuels produces the smallest amount of carbon dioxide per unit of energy released?
Although we do not have hydrogen gas readily available for use, we can separate the hydrogen from water using
Which of the following is NOT found as part of a CSP?
How does the burning of fossil fuels contribute to the enhanced greenhouse effect?
The carbon which is part of the carbon dioxide released from burning fossil fuels cannot be used by plants for photosynthesis
The carbon which is part of the carbon dioxide released from the burning of fossil fuels decreases plant growth
The carbon which is part of the carbon dioxide released from the burning of fossil fuels is ancient carbon which has been sequestered for millions of years
The carbon which is part of the carbon dioxide released from the burning of fossil fuels increases plant growth and therefore results in more plant respiration
Which of the following is NOT matched correctly?
oil/gasoline:second highest emitter of carbon dioxide among fossil fuels
coal: highest emitter of carbon dioxide among energy sources
Natural gas: hydrocarbon
Nuclear energy: wet scrubbers are used to remove sulfur dioxide emissions
Which of the following is NOT matched correctly?
Uranium-235 : fuel
Water : moderator
reduces speed of fast neutrons : moderator
absorbs neutrons : control rod
prevents meltdown : coolant
water and carbon
oxygen and carbon
oxygen and hydrogen
carbon and hydrogen
water and hydrogen
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