Unit 6 Review

Which energy source is renewable?

• Uranium-238

• Coal

• Solar

• Oil

• Natural gas

What distinguishes nonrenewable energy sources from renewable ones?

• They replenish slower than renewable sources.

• They require less technology to extract.

• They are less harmful to ecosystems.

• Their power plants are cheaper to build.

What is the primary reason for the decrease in coal use since early 2000’s?

• Coal shortages

• Increased natural gas and renewable energy usage

• Rising costs of coal extraction

• Environmental laws

Which three energy sources supply the majority of global commercial energy today?

• Coal, oil, and natural gas

• Solar, wind, and biomass

• Hydroelectric, geothermal, and tidal power

• Nuclear, oil, and wind

What is an advantage of using natural gas instead of oil?

• It emits no CO2.

• It burns cleaner.

• It is less abundant.

• It costs less to store.

What process involves using waste heat from manufacturing to generate electricity?

• Cogeneration

• Gasification

• Electrolysis

• Reclamation

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Which country has the largest coal reserves?

• United States

• China

• India

• Russia

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What is a significant environmental issue caused by hydraulic fracturing?

• Groundwater contamination

• Ozone depletion

• Acid rain

• Desertification

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Why is the use of nuclear power often criticized?

• CO2 emissions

• Disposal of radioactive waste

• High fuel costs

• Production of acid rain

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Which energy source is not renewable?

• Biomass

• Nuclear fission

• Solar energy

• Wind