We should use solar panels because they they can be turned into electricity, and we can save it in batteries. We should use solar energy because it is a renewable energy and we must also use the heat of the sun. Installing solar panels is expensive, but then you don't have to spend so much on electricity bills because the solar panels are yours. A house or an office with solar panels looks great.
Ariadna Cirera, Laia Garcia & Estefania Ferrer
dimarts, 6 de març del 2012
dimarts, 28 de febrer del 2012
dijous, 23 de febrer del 2012
The sun, is the power source for all life on earth, and is the closest star to Earth, olnly 155.3 milion kilometres away. The solar energy, is a renewable energy.Sunlight contains electromagnetic energy, this can be changed into solar power station by photovoltaic cells.Ariadna Cirera, Laia Garcia and Estefania Ferrer.
Here there is one new about solar energy!
http://topics.nytimes.com/top/news/business/energy-environment/solar-energy/index.html
http://topics.nytimes.com/top/news/business/energy-environment/solar-energy/index.html
dijous, 16 de febrer del 2012
Why do we have to use renewable energies?
We have to use renewable energies because they are inexhaustible, and they are cleaner, natural and economical. They don't cause pollution and the sources are more abundant.
Difference between renewable and non-renewable energies
Renewables energies are those energies that are produced continuously and they're inexhaustible, for example: solar energy, wind energy, water energy, biomass energy and geothermal energy.
Non-renewable energies are those from the nature and they take milions of years to form, for example: fossil fuel, coal and petrol.
Non-renewable energies are those from the nature and they take milions of years to form, for example: fossil fuel, coal and petrol.
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