Petroleum

One of the world's fossil fuels

How petroleum is formed

Petroleum is formed by hydrocarbons (a hydrocarbon is a compound made up of carbon and hydrogen) with the addition of certain other substances, primarily sulphur. Petroleum in its natural form when first collected is usually named crude oil, and can be clear, green or black and may be either thin like gasoline or thick like tar.

Regions with Petroleum

The Middle East has most of the Petroleum in the world. Egypt, Saudi Arabia, and Iraq contains petroleum. It is also in Russia and America.