RENEWABLE ENERGIES

1. Type of energy that needs uranium or plutonium to be produced.
3. Interconnected network for electricity delivery.
4. Group of wind turbines in the same location to produce energy.
5. It harnesses the energy of water moving from higher or lower elevations.
7. This device captures sunlight as a source of radiant energy, and converts it into electricity.
11. Chemical compound that cars emit, and trees transform into oxygen.
13. Also called petroleum, from which you get plastic or diesel.
15. Type of fossil fuel used for cookers for cooking or heating up water.
16. Energy that utilizes the accessible thermal energy from Earth's interior.
18. A portion of the electromagnetic radiation given by the Sun that lets us see during the day.
19. A combustible black or brownish-black sedimentary rock.

2. What contamination is causing in our planet.
6. It is a hydrocarbon-containing material that is formed naturally in the Earth's crust from the remains of dead plants or animals.
8. Type of energy that harnesses the kinetic energy of moving air.
9. Barrier that stops or restricts the flow of water.
10. Type of energy that is produced from a variety of organic materials, called biomass.
12. A kind of energy that comes from the sun.
14. Gas that absorbs and emits radiant energy back to Earth, heating it up.
17. An energy that derives from technologies that use the kinetic and thermal energy of seawater - waves or currents for instance.