energy

1. Fuel from organic sources
4. Power Energy that is harnessed from reactions among radioactive isotopes
7. relating to or denoting the action of heated water in the earth's crust.
10. the energy an object has due to its motion
11. A complex machine that burns fuel to produce thermal energy and then uses the energy to do work.
12. the trapping of the sun's warmth in a planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
15. a form of energy that travels through space in the form of waves
17. Fuel that is made of hydrocarbons that are 16 carbons long; a high compression internal combustion engine.
18. Energy that is stored and held in readiness

1. A diesel substitute produced by extracting and chemically altering oil from plants
2. liquid fossil fuel; oil
3. the total carbon dioxide emissions produced by an individual, group, or location
5. to change from one form to another
6. A gas with high methane content, found along with various fossil fuels and is used as a fuel.
8. A resource that has a theoretically unlimited supply and is not depleted when used by humans.
9. The ability to do work or cause change
13. The conversion of one form of energy into another, or the movement of energy from one place to another.
14. A machine that converts mechanical energy into electrical energy
16. a unit of power equal to 1000 watts