Across
- 2. Oil is divided into fractions where these are separated
- 6. A type of biofuel used in cars
- 7. A biogas obtained from cows
- 8. A gas which has only recently been used as fuel for cars
- 10. A common Australian use for natural gas
- 11. Most fuels give off energy through this type of reaction
- 14. A type of power gained from the sun
Down
- 1. Fuels that cannot easily be reused or replaced
- 2. Electric power gained from the use of flowing water
- 3. Fuels that can easily be reused or replace
- 4. A fossil fuel used in trains
- 5. These are neeeded to be grown for biomass
- 9. A type of power where wind is used
- 12. Places where people dig to obtain fuels or minerals
- 13. A dangerous type of energy production
- 15. Which fuel source is going to run out first