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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

What are the three things controlling the amount of solar energy reaching Earth?

The amount of solar energy reaching Earth is primarily controlled by three factors: the Earth's distance from the Sun, which varies due to its elliptical orbit; the Sun's output, which can fluctuate due to solar cycles; and the Earth's atmosphere, which can absorb or reflect solar radiation. Additionally, clouds and aerosols can influence how much solar energy reaches the surface. Together, these factors determine the overall solar radiation received by the planet.

What are the advantages of using inexhaustible resources of energy?

Inexhaustible energy resources, such as solar, wind, and geothermal energy, offer significant advantages, including sustainability and reduced environmental impact, as they produce little to no greenhouse gas emissions. They provide a continuous supply of energy, mitigating the risks associated with resource depletion and price volatility found in fossil fuels. Additionally, their widespread adoption can enhance energy security, create jobs in the renewable sector, and promote technological innovation.

Does hydropower cost a lot to produce?

Hydropower is generally considered a cost-effective renewable energy source, especially once the initial infrastructure, such as dams and turbines, is built. While the upfront capital costs can be high, the operational and maintenance costs tend to be low, and the generation of electricity is often cheaper compared to fossil fuels over time. Additionally, hydropower plants have long lifespans, which can further spread out costs. Overall, while the initial investment can be significant, the long-term benefits and lower operating costs make hydropower economically viable.

What is the difference between a renewable resource and a flow resource?

A renewable resource is a natural resource that can be replenished naturally over time, such as solar energy, wind, and biomass. In contrast, a flow resource refers to resources that are continuously available and can be used as they flow, such as rivers or wind currents. While both can be sustainable, renewable resources focus on the ability to regenerate, whereas flow resources emphasize the ongoing availability and utility during their flow.

What the tax paid by organisation on non renewable energy?

Organizations may face various taxes on non-renewable energy, including carbon taxes and fossil fuel taxes, which aim to reduce greenhouse gas emissions and encourage the use of cleaner energy sources. These taxes are typically calculated based on the amount of carbon dioxide emitted or the volume of fossil fuels consumed. Additionally, some jurisdictions impose environmental levies or fees as part of their regulatory framework. The specific tax rates and structures can vary significantly depending on the country or region.

Is solar electric renewable?

Yes, solar electric energy is considered renewable because it harnesses energy from the sun, which is an abundant and inexhaustible resource. As long as the sun shines, it can provide a sustainable source of electricity without depleting natural resources or causing significant environmental harm. Additionally, solar energy systems can reduce greenhouse gas emissions compared to fossil fuels.

What chapter in OPNAVINST 5100.23 Series provides guidance to protect workers against hazardous energy sources?

Chapter 6 of OPNAVINST 5100.23 Series provides guidance to protect workers against hazardous energy sources. This chapter outlines the requirements for implementing lockout/tagout procedures to ensure the safety of personnel during maintenance and servicing operations. It emphasizes the importance of identifying hazardous energy sources and establishing protocols to control them effectively.

Which renewable energy sources do you make use of in Namibia?

Namibia primarily utilizes solar and wind energy as its main renewable energy sources. The country has abundant sunlight, making solar power a significant contributor to its energy mix, especially in rural areas. Wind energy is also harnessed, particularly in coastal regions. Additionally, Namibia is exploring biomass and hydropower potentials to diversify its renewable energy portfolio further.

Why are forests considered a renewable source of construction materials?

Forests are considered a renewable source of construction materials because they can regenerate naturally over time through processes like replanting and natural growth. Sustainable forestry practices ensure that trees are harvested at a rate that allows the ecosystem to recover, maintaining the balance of the forest. Additionally, advancements in forestry management, such as selective logging and agroforestry, help minimize environmental impact while providing a continuous supply of wood and other materials. This renewable aspect supports both economic needs and ecological health.

What is a catchphrase for hydropower?

"Hydropower: Harnessing Nature’s Flow for a Greener Tomorrow!" This catchphrase emphasizes the renewable aspect of hydropower while highlighting its role in promoting sustainability and environmental stewardship.

Why do we need to use renewable energy sources other then non renewable?

We need to use renewable energy sources to reduce greenhouse gas emissions and combat climate change, as non-renewable sources like fossil fuels contribute significantly to global warming. Renewable energy sources, such as solar, wind, and hydro, are sustainable and abundant, helping to ensure long-term energy security. Additionally, transitioning to renewables can create jobs, stimulate economic growth, and reduce air and water pollution, leading to a healthier environment.

Where can you find renewable energy information about wales?

You can find renewable energy information about Wales on the Welsh Government's official website, which provides resources on policy, initiatives, and statistics related to renewable energy. Additionally, organizations like the Energy Saving Trust and Natural Resources Wales offer valuable insights and data on renewable energy projects and developments in the region. Local universities and research institutions may also publish relevant studies and reports.

What is the largest country with 100 percent renewable energy?

Iceland is often cited as the largest country that generates 100 percent of its electricity from renewable energy sources. The country primarily utilizes geothermal and hydroelectric power, harnessing its abundant natural resources. While Iceland's overall energy consumption includes fossil fuels, particularly in transportation, its electricity generation is entirely renewable.

What is renewable energy resource derived from burning organic material such as wood and garbage called?

The renewable energy resource derived from burning organic material such as wood and garbage is called biomass energy. Biomass involves the conversion of organic materials into energy through combustion or other processes, releasing stored energy in the form of heat. This energy can be used for heating, electricity generation, and biofuels. Biomass is considered renewable because it can be replenished through sustainable practices.

Some sources for energy are called alternative sources. To what sources of energy are they an alternative?

Alternative energy sources are typically alternatives to fossil fuels, such as coal, oil, and natural gas, which are conventional energy sources. They include renewable options like solar, wind, geothermal, hydroelectric, and biomass energy. These alternatives aim to reduce greenhouse gas emissions, decrease dependence on finite resources, and promote environmental sustainability. By harnessing natural processes, alternative energy sources provide cleaner and more sustainable energy solutions.

Why did each of the alternative energy sources you named are considered renewable?

Alternative energy sources like solar, wind, and hydro are considered renewable because they harness natural processes that are continually replenished. Solar energy captures sunlight, which is abundant and inexhaustible on human timescales. Wind energy utilizes air currents generated by the sun's heating of the Earth's surface, while hydro energy relies on the water cycle, which is driven by solar energy. These sources are sustainable and have minimal environmental impact compared to fossil fuels.

What is a non-renewable energy source and will it replenish itself?

A non-renewable energy source is a type of energy that is derived from finite resources that cannot be replenished on a human timescale, such as fossil fuels (coal, oil, and natural gas) and nuclear fuels (uranium). Once these resources are extracted and consumed, they do not naturally regenerate, leading to depletion. As a result, reliance on non-renewable energy sources poses sustainability challenges and contributes to environmental issues like climate change. Transitioning to renewable energy sources, such as solar and wind, is essential for long-term energy security and environmental health.

What is the relation between the angle and the separation point in the flow visualization experiment?

In flow visualization experiments, the angle of the object influences the separation point, which is where the flow detaches from the surface. A larger angle typically increases the pressure gradient and can lead to earlier flow separation, resulting in increased drag. Conversely, a smaller angle can maintain attached flow for a longer distance, reducing drag and improving aerodynamic efficiency. Thus, the angle directly affects the separation behavior and overall flow characteristics around the object.

What is the source of almost half of all renewable energy in the United states?

Almost half of all renewable energy in the United States comes from hydropower. This is primarily due to the country's extensive network of rivers and dams, which harness the energy of flowing water to generate electricity. Additionally, hydropower has been a well-established energy source for over a century, contributing significantly to the overall renewable energy mix. Other sources like wind and solar are growing rapidly, but hydropower remains the largest contributor.

What is the efficiency of biofuel?

The efficiency of biofuel varies depending on the type of feedstock used, the conversion process, and the end use. Generally, biofuels can convert about 70-90% of the energy from their feedstocks into usable energy. However, factors such as land use, resource inputs, and greenhouse gas emissions must also be considered when evaluating overall efficiency. In some cases, biofuels offer a sustainable alternative to fossil fuels, but their ecological impact can be complex.

Is a camera nonrenewable?

A camera itself is not considered a nonrenewable resource; it is a manufactured product made from various materials, including metals, plastics, and glass, which can be recycled or reused. However, the components within a camera, such as certain rare earth elements used in electronics, may be limited and less readily available. The emphasis on sustainability has led to efforts to recycle and repurpose cameras and their parts to reduce waste. Overall, while a camera is not inherently nonrenewable, its production can involve nonrenewable resources.

What positive claim can you make about the benefits of using renewable energy sources?

Using renewable energy sources can help reduce greenhouse gas emissions, combat climate change, and promote energy independence.

Is plutonium a renewable or non renewable resource?

Plutonium is a non-renewable resource. It is a radioactive element that is primarily produced through the nuclear fission of uranium-238 in nuclear reactors. Once plutonium is used in nuclear reactions, it undergoes a series of radioactive decays and eventually becomes unusable for energy production. Due to the limited availability of uranium-238 and the complex process required to produce plutonium, it is considered a finite and non-renewable resource.