Energy

5. Energy that is released when atoms' nuclei are fused together (fusion) or split apart (fission). Nuclear power plants produce electricity through nuclear fission.
7. Energy from the force of moving water. Hydropower plants use dams to capture water energy and convert it to electricity.
8. Energy that comes from the sun. It's the primary source of energy for all living things on Earth, and can also be converted into electricity through solar cells.

1. Energy that comes from the remains of plants that died hundreds of millions of years ago. It has the highest level of carbon of all fossil fuels.
2. That can be harnessed by large blades on wind turbines, which use it to generate electricity for residential and commercial purposes.
3. Energy from the heat generated by the Earth, such as volcanoes or geysers. It can be used to produce electricity, and provide heat and hot water.
4. This gas was formed from the remains of tiny sea plants and animals that died millions of years ago. It is mainly composed of methane.
6. Organic matter, such as wood, crops, seaweed and animal waste. It gets its energy from the sun and can be used to produce electricity.
9. Also known as petroleum – can be extracted and refined in order to make products such as gasoline, diesel and jet fuel.