Answers AZ-Environmental Science B SC312Nuclear Energy

Nuclear Energy — Test Answers

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What is the sequence of energy transformations that occur in a nuclear reactor?

nuclear energy mechanical energy thermal energy electrical energy

nuclear energy thermal energy mechanical energy electrical energy

thermal energy nuclear energy mechanical energy electrical energy

electrical energy thermal energy mechanical energy nuclear energy

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Which environmental hazard is directly related to nuclear power production?

land stripping

global warming

radiation leakage

soil erosion

Disposal of radioactive waste is a major concern in nuclear power production. Which method of disposal is least dangerous?

distributing nuclear waste in small quantities in many locations

releasing nuclear waste into the atmosphere where living things are not affected

encasing nuclear waste in containers that are then taken to remote locations

pouring nuclear waste into oceans and larger lakes

Which energy transformation occurs in the core of a nuclear reactor?

nuclear energy mechanical energy

nuclear energy thermal energy

thermal energy nuclear energy

mechanical energy nuclear energy

What change of energy occurs between the steam generator and the turbine?

Chemical energy is converted into nuclear energy.

Nuclear energy is converted into thermal energy.

Thermal energy is converted into mechanical energy.

Mechanical energy is converted into electrical energy.

Consider the following statistic.As of January 2009, the USA has produced 60,000 metric tons of nuclear waste in 60 years of operating 104 nuclear power plants.On average, how much waste is produced by each plant on a monthly basis?

0.8 tons per month

83.3 tons per month

104 tons per month

866.3 tons per month

If each fission reaction in a nuclear reactor emits three neutrons, how many neutrons are produced from three fission reactions?

one

three

six

nine

The waste from which type of power plant produces the least amount of greenhouse gases?

a coal power plant

a gas power plant

a nuclear power plant

an oil power plant

Which process occurs in a fission nuclear reactor?

Nuclei combine.

Nuclei split apart.

Neutrons combine.

Neutrons split apart.

Which energy transformation occurs in the core of a nuclear reactor?

nuclear energy mechanical energy

nuclear energy thermal energy

thermal energy nuclear energy

mechanical energy nuclear energy

A benefit of using nuclear energy could be the abundance of uranium in nature. Which human risk about mining is the most important to consider?

the use of a nonrenewable resource

the location of storage of the radioactive waste

the cost of setting up a uranium mine operation

the health hazards that are associated with uranium mining

Which statement describes the use of control rods?

Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.

Control rods are lowered into the reactor to speed up the reaction by releasing neutrons.

Control rods are raised out of the reactor to slow down the reaction by absorbing neutrons.

Control rods are raised out of the reactor to speed up the reaction by releasing neutrons.

Which disadvantage of nuclear power use poses the greatest threat to the environment?

the emission of greenhouse gases

the proliferation of nuclear materials

the storage and management of radioactive wastes

the high cost of building facilities

The following graph compares the greenhouse gas emissions from different forms of electricity production.Which conclusion is supported by the information in the graph?

Nuclear power releases less greenhouse gases than other forms of power.

Nuclear power releases an average amount of greenhouse gases.

Nuclear power releases no greenhouse gases.

Nuclear power releases more greenhouse gases than other forms of power.

Which type of reaction occurs in the core of a nuclear reactor in a nuclear power plant?

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