Environmental Science Energy Resources and Consumption

Question 1

Which energy source accounts for the largest share of global primary energy consumption?

Accepted Answer

Petroleum and other liquids

Answer

Nuclear power

Answer

Renewable energy

Answer

Natural gas

Question 2

The net energy yield of a fuel source is best described as:

Accepted Answer

The energy remaining after subtracting extraction and processing costs

Answer

The total energy released during combustion

Answer

The efficiency rating of the power plant burning the fuel

Answer

The carbon dioxide emitted per unit of energy produced

Question 3

Which of the following is a non-renewable energy source?

Accepted Answer

Natural gas

Answer

Wind

Answer

Biomass

Answer

Hydropower

Question 4

Cogeneration (combined heat and power) improves energy efficiency by:

Accepted Answer

Capturing waste heat from electricity generation for useful heating

Answer

Using two types of fuel simultaneously

Answer

Generating electricity from two separate turbines

Answer

Mixing fossil fuels with biofuels

Question 5

The Hubbert Peak theory predicts that:

Accepted Answer

Global oil production will eventually reach a maximum and then decline

Answer

Renewable energy will surpass fossil fuels by 2050

Answer

Nuclear energy will plateau as uranium reserves are exhausted

Answer

Coal consumption will peak due to environmental regulations

Question 6

Which sector consumes the most energy in the United States?

Accepted Answer

Industrial

Answer

Residential

Answer

Commercial

Answer

Transportation