Natural gas

Natural gas
Natural gas is a mixture. It consists mainly of hydrocarbons. The main component is methane. Natural gas is often found in the ground together with petroleum.
Most natural gas is burnt directly to produce energy. It burns with a clean blue flame. It causes little pollution.
The main uses of natural gas are to produce electricity, cook and heat buildings. It is also used as fuel for cars and to make fertilizers.
When natural gas is burned, it heats a tub of water. Steam from the hot water rushes up and spins a machine that makes electricity.
Natural gas is also used to make many plastic products. It is used for many cars such as trucks, boats, cars, excavators, big rigs, and airplanes.

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