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Alternative Sources of Energy
Transcript of Alternative Sources of Energy
Submitted by: Abbie Goldsworthy What is an alternative energy source and why do we need one? An alternative source of energy is a source of energy other than the burning of a fossil fuel. Most of our daily activities would come to a standstill if we didn't have natural energy sources like oil, coal, and natural gas. However, oil and natural gas are non-renewable, oil is getting more and more expensive, and they are dangerous to the environment upon heating. Therefore, we need to consider an alternative energy source. Different energy alternatives There are several alternative sources of energy, such as solar, wind power, geothermal, and tides.
Solar:The total energy we get each year from the sun is approximately 35,000 times the total energy used by man. Solar energy is being used in furnaces for homes and to heat swimming pools, but it could be used to run cars, power plants, and space ships. There are many pros to solar energy: it doesn't give off any pollution, it produces electricity quietly, and it can harness electricity in remote locations, such as space. However, there are also some cons. The major con of solar energy is the initial cost of solar cells, which can be over $1000. Also, solar energy is only able to generate electricity during daylight hours, and the weather can effect the solar cells. ... When air moves, it has kinetic energy. The wind’s kinetic energy can be captured and converted to other forms of energy such as electricity. There are pros and cons to wind power. The pros are: wind is renewable and freely available, no pollution or waste is generated, the equipment is low-maintenance. The cons are: not all places are appropriate for wind energy. Wind speed varies by weather, location, and season. Also, the equipment can be very pricey Wind Energy Geothermal Energy Geothermal energy is energy taken from the heat in the inside of the earth. The pros:
- it is a renewable source.
- it is a clean and green form of energy.
- you can save a lot of money by using geothermal energy to heat or cool your home.
- it requires a very large area.
- it has the possibility to cause earthquakes.
- the initial construction cost is expensive. Tidal Energy Tidal energy is energy produced by the rise and fall of tides.
It's a renewable source.
It's mostly an environmentally friendly energy source.
Tidal currents are predictable.
It's effective even at low speeds.
Tidal power plants need to be built close to land, which is also where technological solutions are being worked on.
The environmental effects are not completely determined.