We require a variety of energy sources to work and live. Geothermal, solar, wind and biomass are a few of the sources. These sources are not just a major source for electricity, but also can be used for heating and transport. They can also i vantaggi delle centrali energetiche emit greenhouse gases when they are used to generate electricity. This leads to the need for more sustainable energy sources.
Fossil fuels are the most widely used type of energy. They comprise oil, coal and natural gas. They began to form millions and millions of years ago when prehistoric animals and plants passed away and were then buried beneath layers of sedimentary rock. In the right conditions, they were gradually transformed into carbon-rich compounds which, when burned, generate energy. These fossil fuels will not be renewable since they will run dry in our lifetimes or over the course of many years.
Renewable energy sources are replenished continuously. The sun is the main source of renewable energy, since it provides warmth and light. It is used to power our homes and businesses as well as to drive cars. Wind is an energy source renewable that generates electricity by spinning turbines. We have been using it since we first discovered how to harvest the wind for millennia. In the end, we employ biochemical processes to create ethanol (a clear alcohol that can be used as a fuel) from waste and crops.
Hydropower is the largest renewable energy source in the US, but biofuels and winds will soon take over. Hydropower utilizes the natural water cycle to harness water’s swift flow, which produces electricity.