Coal

Coal is a natural fossil fuel that is formed from the remains of ancient vegetation and is primarily composed of carbon. It is found in underground deposits and is a major source of energy worldwide.

Formation of Coal

Coal is formed from the remains of plants that lived and died millions of years ago. Over time, the remains were buried under layers of sediment and subjected to heat and pressure, which transformed them into coal.

Types of Coal

There are four main types of coal: lignite, subbituminous, bituminous, and anthracite. These types differ in their carbon content and energy output, with lignite being the youngest and least carbon-dense, and anthracite being the oldest and most carbon-dense.

Uses of Coal

• Electricity generation
• Steel production
• Industrial processes
• Heating and cooking

Environmental Impact

While coal is a valuable source of energy, its combustion releases pollutants such as carbon dioxide, sulfur dioxide, and particulate matter, contributing to air and water pollution and climate change.

Study Guide

1. What is coal?
2. How is coal formed?
3. What are the types of coal?
4. What are the uses of coal?
5. What are the environmental impacts of coal?

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