4 Alternative Energy Sources and Their Benefits for Life (Complete)
4 Alternative Energy Sources and Their Benefits for Life (Complete) - Nature has provided various kinds of alternative energy that never ends. On this occasion, aroundknowledge.com will discuss and describe several alternative energy sources and their functions for life. Here's an explanation.
4 Alternative Energy Sources and Their Benefits for Life (Complete)
Let's discuss in full about alternative energy sources and their benefits for human life below.
Alternative Energy Sources And Their Benefits
There are several alternative energy sources that we will discuss, namely solar, wind, geothermal and water.
1. Sun
It is the greatest resource on earth. The energy released by the sun is in the form of heat and light energy. Solar energy can illuminate the earth during the day and we can immediately enjoy it without turning on the bright lights. Besides being useful for human life, the sun is also beneficial for plants. Solar light energy can be converted into electrical power by a device commonly called a solar cell. The benefits of solar thermal energy can be directly utilized, which is like heating water at home. Solar panels are tools used to capture heat energy which is usually installed on the roof of the house.
2. Wind
Wind power has been utilized for human needs since ancient times, such as sailing ships that only use the wind to travel around the world. Apart from that, like windmills, corn grinding machines and water pumps, they still need wind power. However, strong winds can bring disaster on earth.
Currently, wind power is also used to generate electricity. Aerogenerator is a tool used to generate electricity by wind power which is generally in the form of a tower. At the top of this tower, the propeller is installed, and the propeller rotates when the wind blows. It is from this propeller rotation that causes the generator to produce electricity. The number of aerogenerators is installed in large numbers, because the more aerogenerators, the greater the electrical energy generated. And this aerogenerator is installed in an open and wide field.
3. Geothermal
The earth is composed of various layers and the center of the earth is formed from layers of very hot rock. So this shows that the earth is a very large source of heat energy. Geothermal energy is used to generate electricity. We can study the processes that occur in a steam power station. Cold water is pumped from the surface and piped into the ground to the rock layers. When they got there, the water immediately boiled and immediately turned into steam. This steam rotates the turbine then the turbine rotates the generator to produce electricity.
4. Water
Water is very beneficial for life, every day, water is needed. With Water flowing from a high place to a lower place. Very fast flow is a source of motion energy. The energy of motion can also be used to generate electricity. In hydroelectric power stations, water is usually dammed so that the surface becomes high.
Usually, hydroelectric power plants are built in hilly areas. The water is dammed and then flowed through a descending tunnel. The water flow rotates a turbine which is connected to a generator. The rotating generator produces electricity.
Thus a brief discussion about 4 Alternative Energy Sources and Their Benefits for Life (Complete), hopefully it can be useful for all readers. Thank you very much 🙂
Source: Science for Class IV SD, Erlangga Publisher
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