Energy Sources

Source of energy from plant materials and animal waste.

• Solar

• Wind

• Biomass

• Hydropower

First source of energy harvested and used by humans.

• natural gas

• biomass

• nuclear/uranium

• petroleum

Renewable energy source; we can grow more.

• petroleum

• hydropower

• coal

• biomass

Carbon dioxide, sulfur dioxide, nitrous oxide, and other pollutants are produced.

• coal

• solar

• uranium/nuclear

• geothermal

Used to smelt iron into steel

• solar

• geothermal

• coal

• hydropower

Methane gas that is found around much of this source in the U.S. and is a valuable resource.

• hydropower

• geothermal

• uranium

• coal

Comes from heat within the Earth.

• Solar

• Hydropower

• Geothermal

• Propane

It is renewable

• coal

• petroleum

• natural gas

• geothermal

This source is found along major tectonic plate boundaries, where magma comes very near Earth’s surface.

• geothermal

• petroleum

• wind

• coal

It is a renewable energy source.

• Coal

• Propane

• Hydropower

• Natural Gas