Energy sources

2. The type of fuel that can be replaced by recycled cooking oil.
6. This is one of the largest oil consuming countries in the world.
7. This type of energy is ideal for isolated households or communities in tropical countries.
9. This machine turns turbine movement into electric current.
11. Water is turned into this to power turbines in the case of thermal energy.
13. These forms of energy require water to be heated.
14. To produce electricity, many sources of energy are used in different ways, but most of them end up spinning a ______.
16. The main issue with wind energy is that it is not __________.
18. Solar, wind, tidal, biomass are all forms of ______ energy.
20. The substance obtained from crops like sugar cane and can replace conventional gasoline fuel.

1. Harnessing the power of rivers using dams is _ _ _.
3. One big problem with fossil fuels is their carbon ________.
4. Geothermal power can produce electricity as well as ___________.
5. This is one of the cheapest forms of energy, and a dirty fossil fuel.
8. Coal is formed from a layer of organic matter called _______.
9. The type of energy obtained from the heat of the Earth. Used in Iceland.
10. For HEP, this concrete structure is normally needed.
12. Forms of energy that use or rely on heat for electricity production need this to cool down the power station machinery.
15. This type of energy is sourced from URANIUM atoms. Used in France.
17. This country is fully supplied by Hydroelectricity.
19. Solar PV cells are not more widely used because of their high _____.