Different energy sources supply us with the power we need to live and work. These include solar, wind geothermal, biomass, as well as geothermal sources. In addition to being the primary source of electricity, these sources can also be used to heat and transport. These energy sources can emit greenhouse gases when burned to generate electricity. This leads to the need for more sustainable sources of energy.
The most common type of energy is fossil fuels, which consist of coal, oil, and natural gas. They formed millions of years ago when prehistoric animals and plants passed away and were then buried beneath layers of sedimentary rock. When the appropriate conditions, they slowly transformed into carbon-rich substances which, when burnt create energy. These fossil fuels are not renewable as they will run out in our lifetimes or even in many lives.
Renewable energy sources are replenished regularly. The sun is the most important source of renewable energy as it provides both light and heat. We use it to power our homes and businesses and to drive vehicles. Wind is a renewable energy source that produces electricity by spinning turbines. Since the first time people realized how to harness the wind in the past, we have been using it for millennia. We use biological processes create alcohol (a clear, alcohol-like substance https://leonardogiombini.it/2020/06/02/primi-3-punti-chiave-di-unesperienza-centralizzata/ which can be used as fuel) from the waste of crops and other materials.
Hydropower is by far the most important renewable energy source in the United States, but biofuels and wind will soon take over. Hydropower utilizes the natural water cycle to harness the water’s rapid flow, which in turn can be used to produce electricity.
