Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Fossil fuels are energy resources formed from the remains of ancient plants and animals over millions of years. They include coal, oil, and natural gas and are used to generate electricity and power various forms of transportation.
5 Must Know Facts For Your Next Test
Fossil fuels store chemical energy that is released through combustion.
Burning fossil fuels releases carbon dioxide (CO2), contributing to greenhouse gas emissions.
They are a non-renewable resource, meaning they cannot be replenished on a human timescale.
Fossil fuels account for a significant portion of global energy consumption.
The efficiency and environmental impact of fossil fuel usage vary depending on the type and method of extraction.