ENERGY

3. a hard rock which can be burned.
4. an electrical appliance that is used to mix food or make fruit juice.
5. an advantage or profit gained from something, so it isn't harmful.
6. energy that uses the power of the sun to produce electricity.
9. a type of renewable energy that is stored in rocks and fluids in the centre of the Earth.
12. an unfavorable condition or position, it can cause damage or loss.
13. an organic material that comes from plants and animals.
15. a kind of energy produced by converting primary sources of energy.

1. a lamp in which electricity is the source of light.
2. an energy source that can't be replenished or takes millions of years to form.
7. the flow of electrical power or charge. It’s one of the most widely used forms of energy.
8. the production of electricty by the force of fast moving water.
10. energy that comes from natural sources or processes that are replenished but flow-limited.
11. a device that produces electricity to provide power for radios, cars,etc.
14. one of the natural sources of energy that comes from the air flows and it is used to generate electricity.