Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Petroleum, also known as crude oil, is a naturally occurring liquid mixture composed mainly of hydrocarbons. It forms over millions of years from the remains of marine organisms buried in sediments.
An oil spill occurs when petroleum is released into the environment, usually from accidents during transportation or drilling, causing harm to ecosystems and wildlife.
Refining: Refining is the process of purifying crude oil to separate it into different components such as gasoline, diesel, and jet fuel.
OPEC (Organization of Petroleum Exporting Countries): OPEC is an international organization made up of major oil-producing countries that coordinate policies to stabilize oil prices and ensure steady supply.