Energy

5. type of reaction used to produce nuclear energy
7. fossil fuel formed from woody land plants that lived millions of years ago
8. CCS for short, process where carbon dioxide is pumped and buried underground in rock formations
12. worst environmental disaster in US history
15. US government program that rates appliances according to their energy efficiency
16. site of nuclear power accident in Japan caused by a tsunami

1. petrochemicals from oil are used to make these everyday products
2. the main fossil fuel used for transportation
3. consists of organic material derived from living or recently living organisms
4. energy produced by releasing water through a series of turbines in a dam
6. a form of bioenergy made from corn and sugarcane; added to gasoline
9. fossil fuel that is cleaner burning than coal and major source of US electricity
10. the ability to obtain more energy output while using less energy input
11. main component of natural gas
13. modern extraction technique that has allowed the US to increase production of natural gas and oil
14. to calculate this, divide energy returned by energy invested