powering the future
Páginas: 3 (517 palabras)
Publicado: 31 de agosto de 2014
Powering the future
As fossil fuels such as coal and oil become more difficult to find and more expensive, people are looking for alternative sources of energy - energy that is clean andrenewable. But which form of alternative energy is the right one?
2. Solar panels collect energy directly from the sun and convert it to electrical power. Solar energy can also heat water, and steam from thehot water turns turbines to produce electricity. These processes do not produce air pollution, but the cost of solar panels is very high, and at night or on cloudy days, the panels produce lessenergy.
3. Wind is another way to collect energy from the sun. The sun's heat causes air to and to turn the blades of turbines. Wind turbines produce clean electricity, and unlike solar panels, they workwell on cloudy days. Some people, however, say the turbines are noisy and ugly.
4. Nuclear power plants produce a lot of electricity, and unlike power plants that burn gas or coal, they don'tpollute the air with carbon. But the disadvantages of nuclear power include the high cost of building them and concerns about what to do with radioactive nuclear waste.
5. In the end, no single one thesesources is the answer to our energy problems. But a combination of these- along with other sources such as tidal or geothermal energy- may be the way to meet the world's energy needs without dependingon fossil fuels.
Generamos futuro
Como los combustibles fósiles como el carbón y el petróleo se vuelven más difíciles de encontrar y más caro, la gente está buscando fuentes alternativas deenergía - energía limpia y renovable. Pero, ¿qué forma de energía alternativa es la correcta?
2 . Los paneles solares recogen la energía directamente del sol y la convierten en energía eléctrica. La energíasolar también se puede calentar el agua , y el vapor del agua caliente hace girar las turbinas para producir electricidad. Estos procesos no producen la contaminación del aire , pero el costo de...
As fossil fuels such as coal and oil become more difficult to find and more expensive, people are looking for alternative sources of energy - energy that is clean andrenewable. But which form of alternative energy is the right one?
2. Solar panels collect energy directly from the sun and convert it to electrical power. Solar energy can also heat water, and steam from thehot water turns turbines to produce electricity. These processes do not produce air pollution, but the cost of solar panels is very high, and at night or on cloudy days, the panels produce lessenergy.
3. Wind is another way to collect energy from the sun. The sun's heat causes air to and to turn the blades of turbines. Wind turbines produce clean electricity, and unlike solar panels, they workwell on cloudy days. Some people, however, say the turbines are noisy and ugly.
4. Nuclear power plants produce a lot of electricity, and unlike power plants that burn gas or coal, they don'tpollute the air with carbon. But the disadvantages of nuclear power include the high cost of building them and concerns about what to do with radioactive nuclear waste.
5. In the end, no single one thesesources is the answer to our energy problems. But a combination of these- along with other sources such as tidal or geothermal energy- may be the way to meet the world's energy needs without dependingon fossil fuels.
Generamos futuro
Como los combustibles fósiles como el carbón y el petróleo se vuelven más difíciles de encontrar y más caro, la gente está buscando fuentes alternativas deenergía - energía limpia y renovable. Pero, ¿qué forma de energía alternativa es la correcta?
2 . Los paneles solares recogen la energía directamente del sol y la convierten en energía eléctrica. La energíasolar también se puede calentar el agua , y el vapor del agua caliente hace girar las turbinas para producir electricidad. Estos procesos no producen la contaminación del aire , pero el costo de...
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