1. Renewable or Nonrenewable ENERGY

2. ALTERNATIVE ENERGY Our Way to the Future

3. SOLAR ENERGY  Comes from the sun.  When sunlight shines on an object, it changes to heat and the object warms up.  Certain materials change solar energy into electricity instead of heat.  The energy captured by solar panels can be used to power a entire building.

5. How a solar panel works.

6. HYDRO ELECTRIC POWER  Moving water is an energy source  Water flows through turbines placed inside dams.  The water turbines spin and produce electricity.

9. WIND ENERGY  Comes from the movement of air which caused by the heating and cooling of the earth  The wind must be “captured” and changed into electricity.  Blowing wind turns a propeller on the turbine.  Wind turbines must be placed at least 30 meters (100 feet in the air) so they can capture the fastest winds

11. GEOTHERMAL ENERGY  Underneath the earth’s surface, there are hot water and rocks  These hot areas can be “tapped” into by drilling wells to release the heat.  The heat can be used directly to heat buildings, water and greenhouses for plants.  The steam spins a turbine, generating electricity, as well.  Water shooting straight up from the ground is called a geyser.

12. GEOTHERMAL POWER

15. BIOMASS  Dead plants can provide biomass that can be burned in a biomass facility.  The burning heats water, which produces the steam to turn a turbine  As the turbine spins, it produces electricity