4. ENERGY SOURCES

RENEWABLE: we can replace them as we use them. They replace naturally. It contaminates less.
Hydro Power Station
















- SOLAR: luminous and thermal energy from the Sun
 
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- WIND/EOLIC: kinetic energy from the wind.
Resultado de imagen de facts

- HIDROELECTRIC: kinetic energy from the water

Resultado de imagen de facts


- GEOTHERMAL: thermal energy from the inside of the Earth.


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- BIOMASS: in the organic matter


NON-RENEWABLE: we use them faster than nature produces them. It contaminates more.
Coal-Fired PowerStation
- FOSSIL FUELS: coal, petroleum, carbon... We burn them for energy. To create them we need millions of years.

Resultado de imagen de fossil fuels photo.
- NUCLEAR FUELS: uranium, plutonium... We burn them for energy. They cause radioactivity.




HOW TO SAVE ENERGY?

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