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Renewable Energy
Renewable energy doesn't get used up, in the way that coal and oil do. It is still there the next day, such as sunshine; wind power; water power from rivers and oceans; and geothermal power, which uses the heat deep below the surface of the earth.
2,098 Questions
How is the sun's energy stored in coal and other fossil fuels?
The sun's energy is stored in coal and other fossil fuels through a process called photosynthesis. During photosynthesis, plants capture sunlight and convert it into chemical energy through the synthesis of glucose. Over millions of years, this stored energy is preserved in the form of carbon-rich compounds as plants and other organic matter decompose and are compressed underground, forming coal and other fossil fuels. When these fuels are burned, the stored energy is released as heat and light.
What are the energy transformations in a toaster?
First, a toaster uses electrical energy. Then, it uses this electrical energy and the mechanical energy of you pushing on the lever to produce thermal energy, or heat, and sound as the object in the toaster pops up.
One reason why people should be aware of the impact of their actions on the environment is that?
because we only have one planet, sweetie, and it's not like Amazon Prime can deliver a new one in two days. So, if we keep trashing this place like a frat house after a kegger, we're all screwed. Plus, who wants to live in a world where the only wildlife left are cockroaches and pigeons?
What is the relationship between energy and density?
Energy and density are related through the concept of energy density, which is the amount of energy stored in a given volume or mass of a substance. Higher density materials often have higher energy densities, meaning they can store more energy per unit volume or mass. This relationship is important in various fields such as physics, chemistry, and engineering, where understanding the energy density of materials is crucial for designing efficient systems and processes.
What are 5 disadvantages of light energy?
1 way could be at night time. You need to pay an electricity bill to have light at night.
What are disadvantages of Geothermal energy?
Some disadvantages of geothermal energy include the high upfront costs of drilling and installation, as well as the limited geographic availability of viable geothermal resources. Additionally, there can be environmental concerns related to the release of greenhouse gases and other pollutants from geothermal power plants. Finally, there is the potential for subsurface land subsidence and induced seismic activity in areas where geothermal energy is extracted.
Are eggs a renewable resource?
Eggs are considered a renewable resource because they are produced by chickens through a continuous process of laying eggs. As long as there are hens to lay eggs, the resource can be replenished. However, factors such as proper care and management of the hens, as well as environmental considerations, can impact the sustainability of egg production.
Give one property of metal foil which makes it a good material to use as a switch?
One property of metal foil that makes it a good material to use as a switch is its high electrical conductivity. This property allows for efficient flow of electrical current through the foil, making it an ideal material for conducting electricity in a switch mechanism. Additionally, metal foil is malleable and can be easily shaped or bent to create the desired switch design. Lastly, metal foil is durable and can withstand repeated use without significant degradation, making it a reliable choice for switch applications.
What does the flashing light in the sky mean?
A flashing light in the sky could be from various sources such as aircraft, satellites, or celestial bodies like stars. If it is a consistent pattern of flashing, it is likely an aircraft or satellite navigating through the airspace. If it is irregular or random, it could be a celestial object like a star or planet reflecting light.
Why is Softwood a renewable source?
Softwood is considered a renewable source because it comes from fast-growing trees such as pine, spruce, and fir that can be harvested and replanted. These trees have short harvesting cycles and can be sustainably managed to ensure a continuous supply of wood for various applications.
Is bio energy an example of non renewable resource?
No, bio energy is considered a renewable resource because it is derived from organic materials like plants and waste that can be replenished or grown again. It is a sustainable source of energy that can be continually produced without the risk of depletion.
How can you use renewable energy resources without affecting neighbors?
To use renewable energy resources without affecting neighbors, consider installing solar panels on your own property to generate electricity without producing noise or emissions. You can also use geothermal energy by installing a heat pump system, which is quiet and underground. Additionally, wind turbines can be placed strategically to minimize noise and visual impact on neighboring properties.
When are solar cells most efficient?
Solar cells are most efficient when they receive direct sunlight at a perpendicular angle, during sunny days with minimal cloud cover. They are also more efficient in cooler temperatures rather than extremely hot conditions. Additionally, regular cleaning and maintenance of the solar panels can help to maintain their efficiency.
The answer is unfortunately political in nature. There has been insufficient commitment to the development of alternative, renewable energy resources, in large part because the fossil fuel industry has financed huge disinformation campaigns and given enormous contributions to congressmen willing to oppose reasonable measures aimed at curbing exploitation of fossil fuels and other non renewable resources. There is less short term financial risk for vested interests in defending the status quo.
Much of our hydroelectric power depends upon a reliable winter snow pack. Prolonged droughts put us at risk of energy shortages. Although wind is intermittent, there are many places where air masses move in the same direction for extended periods of time. The trade winds depend upon earth's Coriolis Effect. Although clouds cut into solar power, the sun's output itself varies by only a tiny fraction from year to year. It is considered extremely reliable. The more we invest in ANY technology, the more solutions we find to potential problems.
Germany meets 10% of its national electrical needs via wind power, and is increasing wind generation by constructing more off shore wind farms. More wind and solar plants are being erected in various places around the US as well, as energy companies answer the demands of their customers and state mandates for shifting emphasis on renewable resources. It is surprising the US has taken a back seat in terms of developing clean, efficient alternatives, as opposed to many other nations.
Another Answer:
Actually we do get a great deal of our power fro the only currently workable alternative energy, hydro electric.
Yes, there is a great deal of politics in the debate. Solar and wind are the favored alternatives of politically motivated groups.
Wind is unable to ever replace more then a small portion of our needs due to the nature of wind. It blows on it's own schedule, not when we need power. As a result, fossil fuel pants must be running, at almost full power and not connected to the grid to be able to make up the losses in wind. This causes numbers to become very skewed to meet political goals. Wind turbines place huge loads variances across the grid. To manage these variances, fossil fuel plants run (but are not loaded) to make up for these variations. This power is not considered to be on the grid, so while a country may claim to have 6% of it's power from wind, it may be ignoring the fact that 8% more fossil fuel plants are placed on line or at idle to cover the issues caused by the wind systems. The bottom line is that wind is just not practical as of yet. New technologies are being developed to help wind turbines overcome a large portion of these issues. Unfortunately, because we have thousands of these systems up and not functioning well, we become limited in the answers we can bring to market. we would have far more available options if we did not have so many wind systems that will need to be modified. Waiting until the technology is established may well make the U.S.A. a leader in alternative technologies when the bugs are worked out.
Solar also has physical issues that make it's use currently unworkable. Solar panels only provide power for brief periods of time and not as well in warm weather (over 85 degrees F). It is hard to find cool places with lots of sun. Solar panels also have a seriously limited life span.
Until technology marches forward and overcomes these serious limiting issues, these are interesting and currently unworkable technologies.
Interestingly enough most electric providers would be more than open to a renewable technology that offered them more sell able power for less money.
No corporation around prefers to spend extra money. It is not the power companies that are unwilling to accept new technology and politicize the issue. If the technology were to actually become cost effective ad produce real power, energy companies would need to be held back from over developing the "free" power. It is interesting to note that there is a great deal of money being spent on alternative energy research. Most of that money is from oil companies such as BP, the world's largest producer of solar panels.
What is the ring of geothermal resources known as?
The ring of geothermal resources is known as the Ring of Fire. It is a region in the Pacific Ocean basin where a large number of earthquakes and volcanic eruptions occur due to tectonic plate movements.
How long does a filament light bulb last?
Every once in a while, you will get a dud, but for the most part they are intended to last for up to 10,000 hours. For comparable Lumens, they save about 75% of the energy that a regular filament based incandescent (the regular kind) will use.
Even with the duds, it saves you significant amounts of energy. Get a good bulb, though. You're going to want to like the light quality and a good bulb will last longer. You will save money even if they're giving away the incandescents.
Ideal conditions for a compact fluorescent bulb (CFL) are when the bulb comes on, has a chance to warm up, and then stays on. Closet lights will burn out sooner (per hour of use, but since they're used so less frequently), but you will still save energy.
Modern bulbs come on instantly, but they take about 30 seconds to heat up.
Best of luck!
Why is solar energy an abundant renewable energy source?
Solar energy is abundant because the sun continually emits vast amounts of energy, which can be harnessed through solar panels to generate electricity. It is renewable because sunlight is inexhaustible and available in abundance, making it a sustainable energy source for the long term without depletion.
Area taken up by solar panels?
Any area you like. The more area, the more power can be collected. The smallest are but a few square centimeters, or even less, and are used to power calculators.
Any area you like. The more area, the more power can be collected. The smallest are but a few square centimeters, or even less, and are used to power calculators.
Any area you like. The more area, the more power can be collected. The smallest are but a few square centimeters, or even less, and are used to power calculators.
Any area you like. The more area, the more power can be collected. The smallest are but a few square centimeters, or even less, and are used to power calculators.
What explains the position of those who oppose expanding nuclear power plants in the US?
Some opposition to the expansion of nuclear power plants in the US is generated by those who produce power by other means such as coal, oil, and gas. But the major opposition comes from the part of the population that has a somewhat exaggerated fear of nuclear power plants. Three Mile Island, Chernobyl, and Fukushima loom large as nuclear disasters. All three situations were the result of poor design and construction.
Why don't wind turbines work at night?
Wind turbines work whenever there is wind, regardless of the time of day. However, wind speeds tend to be lower at night, which can result in lower electricity generation. Additionally, wind turbines may be shut off at night for maintenance or safety reasons.
What is the use of solar chimney?
A solar chimney - often referred to as a thermal chimney - is a way of improving the natural ventilation of buildings by using convection of air heated by passive solar energy. A simple description of a solar chimney is that of a vertical shaft utilizing solar energy to enhance the natural stack ventilation through a building
