Different energy sources provide us with the power we require to live and work. Geothermal, solar, wind and biomass are a few of the sources. These sources aren’t only the primary source of electricity, but also can be used for heating and transport. They can also emit greenhouse gases when burned to create electricity. This leads to the need for more green energy sources.
Fossil fuels are the most common form of energy. They comprise oil, coal and natural gas. They were formed thousands of years ago, when prehistoric animals and plants died and were then buried under layers of sedimentary rocks. In the right conditions the fossil fuels gradually transformed into carbon-rich compounds that, when burned create energy. These fossil fuels are non-renewable as they will run out in our lifetimes or in many lifetimes.
Renewable energy sources are replenished regularly. The sun is the primary source of renewable energy, since it supplies light and heat. It is used to power our homes and businesses as well to drive our vehicles. Wind is an energy source that is renewable and generates electricity through spinning turbines. Since the first time people realized how to harness the wind and harness it, we have been using it for millennia. We also use biological processes to create the ethanol (a clear alcohol that can be used to fuel) from waste and crop residues.
Hydropower is the main renewable energy source in America, but biofuels and winds will soon overtake it. Hydropower is a natural cycle to harness water’s swift flow, which is used to generate electricity.
le biomasse i processi termochimici