Unit 6 Review

Which type of resource represents nuclear energy?

• nonrenewable resource
• nondepletable resource
• potentially renewable resource
• renewable resource

Which type of resource best represents hydroelectric power?

• nonrenewable resource
• nondepletable resource
• potentially renewable resource
• renewable resource

Which of the following best describes a subsistence energy source?

• These are commonly used in urban areas of developed countries, where fossil fuels are widely available.
• Examples include hydropower and solar power.
• Examples include natural gas and nuclear power.
• These are commonly used in rural areas of develop­ ing countries, where humans gather fuel for their own immediate use.

In 2021, the United States generated 4,119,850,000,000 kilo­watt hours (kWh) of energy. If there are 3,600 kilojoules (kJ) in a kilowatt hour, how much total energy, in­ kilojoules, was generated by the United States in 2021?

• 14.8 kJ
• 1.48 x 10^3 kJ
• 1.48 x10^10 kJ
• 1.48 x 10^16 kJ

Biodiesel produces 40 MJ of energy per kilogram of fuel. How many kilograms of fuel will be consumed if someone travels 200 km in a car that uses 3 MJ of biodiesel per kilometer?

• 7.5 kg
• 15 kg
• 30 kg
• 60 kg

Within a developing nation, an increase in the use of sub­sistence energy sources would most likely be caused by

• a decrease in the availability of straw, sticks, animal dung, and other local sources of fuel.
• an increase in the availability of oil.
• an increase in the cost of oil.
• the loss of forested land.

The source of solar energy, the sun, is replenished at a near infinite rate. The source of nuclear energy, uranium, is replenished at an extremely slow rate. Solar energy is considered __________ while nuclear energy is considered __________.

Coal, oil, and natural gas are all produced with the remains of dead organic matter. These fuel sources are considered __________.

What is a key aspect addressed by the Hubbert Curve?

• Predicting future oil reserves
• Forecasting renewable energy production
• Modeling population growth patterns
• Modeling coal usage

A hydrogen fuel cell is most similar to

• an engine
• a photovoltaic cell
• a source of coal
• a battery