2019 Unit 7 Review

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2019 Unit 7 Review

Check your understanding

Which of the following statements is FALSE? *

1 point

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? *

1 point

mining

refining

purifying

combustion

disposal

What happens to the uranium solution which is pumped from the ground by in situ recovery? *

1 point

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. *

1 point

True

False

True or False: Nuclear energy is considered a non-renewable energy source. *

1 point

True

False

True or False: The United States Navy has ships and submarines which are powered by nuclear energy. *

1 point

True

False

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 *

1 point

1/2

1/8

1/32

1/64

1/128

SCRAM is *

1 point

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? *

0 points

lignite

bituminous

anthracite

peat

kerogen

Natural gas is primarily *

1 point

ethane

propane

butane

methane

Which type of mining is potentially the most harmful to human health? *

1 point

open-pit mining

mountaintop removal

strip mining

subsurface mining

Which of the following statements regarding petroleum is False? *

1 point

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? *

1 point

recycled building materials

double-paned windows

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? *

1 point

hydroelectricity

solar energy

nuclear energy

wind energy

geothermal energy

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? *

1 point

50 kilocuries

100 kilocuries

200 kilocuries

800 kilocuries

7,500 Becquerels

Which of the following sources of energy does NOT employ the use of turbines? *

1 point

nuclear

hydroelectric

coal

CSP

photovoltaic cells

Uranium-235 is used in nuclear reactors because *

1 point

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 *

1 point

fusion

fission

enrichment

meltdown

beta radiation

The planned Yucca Mountain long-term storage facility for high-level radioactive waste is located in the state of *

1 point

Georgia

Colorado

Nevada

California

Oregon

Of the following power plant components, which one is ONLY found in nuclear power plants? *

1 point

turbine

cooling tower

control rod

condenser

water pump

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 *

1 point

enrichment

meltdown

conversion

fission explosion

nuclear fusion reaction

Of the following alternative energy sources, which has the highest energy return on energy invested? *

1 point

photovoltaic cells

hydroelectric

biodiesel

concentrated solar power

Which of the following would NOT be used to make biodiesel? *

1 point

soybean

palm oil

algae

sunflower seeds

charcoal

Which of the following is NOT used as a biomass fuel? *

1 point

charcoal

switchgrass

wood chips

sugar cane

kerogen

Compared to ordinary gasoline, one disadvantage of ethanol is its *

1 point

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? *

1 point

gasoline

coal

natural gas

bitumen

oil shale

Although we do not have hydrogen gas readily available for use, we can separate the hydrogen from water using *

1 point

bioremediation

phosphorization

hydrolysis

electrolysis

hydrofission

Which of the following is NOT found as part of a CSP? *

1 point

turbine

heliostat

molten salt

n-type silicon

generator

How does the burning of fossil fuels contribute to the enhanced greenhouse effect? *

1 point

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? *

1 point

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? *

1 point

Uranium-235 : fuel

Water : moderator

reduces speed of fast neutrons : moderator

absorbs neutrons : control rod

prevents meltdown : coolant

Hydrocarbons contain *

1 point

water and carbon

oxygen and carbon

oxygen and hydrogen

carbon and hydrogen

water and hydrogen

Last name *

First name *

Class period *

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