Natural resources like the sun, earth, water and air are sources of renewable energy. Power or electricity, fuels used in vehicles as well as energy used for hot water and space heaters are conventional fuels that can be replaced by the types of renewable energy. The use of renewable energy is said to be better for the environment.
Using renewable energy has a lot of advantages. Avoiding air pollution, water pollution, lessens creation of toxic wastes, prevents global warming and preserves wild and plant life are all among the environmental benefits of using renewable energy. Nuclear fuels and fossil fuels such as coals, oil and natural gasses cause air pollution, water pollution and pose a threat to animal and plant life and is a cause of global warming as well. Using types of renewable energy is not flawed, but its effects on the environment are small as compared to the use of nuclear fuel and fossil fuels. Negative effects caused by using renewable energy can be minimized by taking proper care.
6 types of renewable energy exist and these are Hydropower, Wind Power, Biomass, Biofuel, Solar Energy and Geothermal Energy. The largest known source of renewable energy is Hydropower and most countries get 10% of their energy for electricity from it. Hydropower is where flow of water is used to create renewable energy. The flow of water is the source of hydropower and rivers are the most common bodies of water used to garner energy. Pollution is not caused by this type of renewable energy, although it may alter the quality of water and can pose a threat to some wild life, particularly fish.
Natural air flow is used to create Wind Power. To convert air flow to wind power, wind mills or wind turbines are used.
Photosynthesis on plants caused by the sun is a process in which Biomass is created, a type of renewable energy. Biomass is a result of a plant matter that produces heat and electricity. Biomass produces a type of energy known as Biofuel.
The most popular type of renewable energy is Solar Energy. Photovoltaics (PV) is a process in which energy from the sun is directly harnessed and solar radiation is then converted into direct current electricity.
A type of renewable energy that comes directly from the earth is called Geothermal Energy. This type of renewable energy is produced from heat coming from steam and hot water from the earth. Among all the other types of renewable energy, this one is the most cost effective and has been said to be the most reliable as well.
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