Coal

The video tutorial provides an in-depth look at coal, a non-renewable fossil fuel formed from ancient plant matter. It explains coal's role as a major energy source for electricity production and details the process of its formation over millions of years. The tutorial classifies coal into four types based on carbon content and energy output: lignite, subbituminous, bituminous, and anthracite. It also covers methods of coal extraction, including underground and surface mining, and discusses the environmental and health impacts of coal mining and burning, highlighting the pollutants released and the land and water contamination caused.

What is the primary component of anthracite coal?

• Oxygen

• Hydrogen

• Carbon

• Sulfur

Which method involves digging tunnels to access coal seams?

• Surface mining

• Strip mining

• Underground mining

• Open-pit mining

What is the purpose of washing coal at the mine?

• To enhance its color

• To remove impurities

• To reduce its size

• To increase its weight

What is a common environmental issue associated with coal mining?

• Deforestation

• Air pollution

• Soil erosion

• Water contamination

Which pollutant is NOT typically emitted from burning coal?

• Carbon dioxide

• Methane

• Nitrogen oxide

• Sulfur dioxide