Mr. Smeeds covers fuel sources, focusing on subsistence fuels, coal, natural gas, and crude oil. He explains the formation, uses, and environmental impacts of each. The video emphasizes the cleaner nature of natural gas compared to coal and discusses the extraction and products of crude oil, including the environmental concerns of tar sands. The session concludes with a practice question on the benefits of natural gas.

Which of the following is a common characteristic of subsistence fuels?

• They are derived from fossilized remains.

• They are easily accessible and often free.

• They are expensive to produce.

• They are primarily used for industrial purposes.

What is the primary use of coal globally?

• Transportation fuel

• Electricity production

• Cooking fuel

• Lubrication

Which type of coal is the most energy-dense and valuable?

• Anthracite

• Bituminous

• Lignite

• Peat

What is the main component of natural gas?

• Butane

• Methane

• Propane

• Ethane

Why is natural gas considered a cleaner fossil fuel compared to coal?

• It is more energy-dense.

• It emits less CO2 and no mercury.

• It produces more particulate matter.

• It releases more sulfur dioxide.

What is a significant environmental concern associated with extracting oil from tar sands?

• It requires minimal water usage.

• It is highly water and energy-intensive.

• It is less energy-intensive than other methods.

• It produces no greenhouse gases.

What is the process called that separates crude oil into different products?

• Thermal depolymerization

• Fractional distillation

• Hydraulic fracturing

• Catalytic cracking

Which product is derived from the highest boiling point hydrocarbons in crude oil?

• Naphtha

• Jet fuel

• Gasoline

• Bitumen

What is naphtha primarily used for?

• Fuel for cars

• Making plastics

• Road construction

• Heating homes

Which of the following is NOT a product derived from crude oil?

• Diesel fuel

• Charcoal

• Motor oil

• Jet fuel