Renewable Energy
Solar power is energy from the sun. The sun is 150 million kilometres away, but it is over 1 million degrees Celsius at the core. If we could harness it, there is enough solar power reaching the earth to provide all of our energy needs 10,000 times over.Since almost the beginning of man, solar power has been used for drying clothes and food. It was not until 1954, that scientists in the United States produced electricity from the sun - to power satellites in space. They invented photoelectric (or photovoltaic) panels (or cells), which capture the sun's energy and turn it into electricity Geothermal energy is energy from the heat of the earth. It has been used for thousands of years in some countries for hot water, cooking and heating. It can also generate electricity using steam produced from heat found beneath the surface of the earth. Electricity is generated by pouring cold water into the heat beneath the surface of the earth and hot steam is generated and is transformed into electricity by the force of the steam that powers a turbine and produces electricity. The centre of the earth is hot enough to m
The waves and tides of the ocean are a never-ending and powerful energy force. They are dependable and plentiful. However, converting their energy to electricity is difficult, and not widespread. Hydroelectric power is electricity generated from the force of running water. Running water is a renewable energy source that has been used for thousands of years. Water mills for example, use the flow of water to turn a wheel which grinds grain. Hydroelectric stations are built where there is running water. The water is channelled past a turbine, which turns with the water flow and creates electricity. The water then goes back into the river, then the ocean. The sun evaporates the water, clouds form, which eventually rain back into the rivers and lakes - restarting the cycle. In this way, hydroelectricity is renewable.
Some common words found in the essay are:
Babylonians Chinese, Geothermal Geothermal, Nuclear Nuclear, Hydro Hydroelectric, Solar Solar, United Wave-Tidal, Local Self-Reliance, energy source, nuclear energy, wind energy, wind energy source, solar power, nuclear power, running water, energy source thousands, surface earth, source power, earth hot, energy electricity, beneath surface earth, energy source power,
Approximate Word count = 786
Approximate Pages = 3 (250 words per page double spaced)
|
