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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

Is tidal power a good power source?

  • They don't think much about it.
  • Tidal power is only suitable at selected locations round the world.
  • The community is more likely to think about renewable energy in general and think that it is good.
  • The community knows that we have to reduce our reliance on fossil fuels (coal, oil and natural gas), because the burning of them is causing global warming.

How do current environmental issues impact the use of renewable energy?

Current environmental issues, such as climate change and air pollution, are driving the need for increased use of renewable energy sources to reduce greenhouse gas emissions and improve air quality. These issues are creating a sense of urgency for governments and businesses to invest in and accelerate the adoption of renewable energy technologies. Additionally, natural disasters, like hurricanes and wildfires, are highlighting the vulnerability of traditional energy systems and the benefits of more resilient renewable energy solutions.

Is gravitational energy renewable?

It is renewable because you can always raise an object or raise yourself and gain gravitational potential energy. You cannot run out of gravitational potential energy and even now you have some of the the energy because gravity is always pulling you. It is just a matter of how much gravitational potential energy you have. Go on the top Mt. Everest and you will have more gravitational potential energy than most of the people in the world.

Which renewable resources are indirect forms of solar energy?

Wind energy, hydropower, and biomass are indirect forms of solar energy. Wind is generated by temperature differences in the atmosphere caused by the sun, hydropower relies on the water cycle influenced by the sun, and biomass is derived from plants that grow through photosynthesis.

Why is natural gas a non renewable energy?

Natural gas is considered non-renewable because it is formed over millions of years from the remains of ancient plants and animals that were buried and subjected to high heat and pressure. Once natural gas reserves are extracted and used, they cannot be readily replenished on human timescales.

Why does the carbon dioxide released by burning biomass not result in global warming?

Biomass (burning of plant material) does release carbon dioxide (CO2) into the atmosphere, but it is CO2 that was recently taken out of the atmosphere (when the plants were growing) so it doesn't add extra CO2 or cause global warming. Burning biomass then is part of the natural carbon cycle which moves CO2 in and out of the atmosphere.

The carbon dioxide that comes from burning fossil fuels (coal, oil and natural gas) was taken out of the atmosphere millions of years ago, so releasing it now is adding extra CO2 (and causing global warming).

This is why biomass is renewable energy and much better than fossil fuels.

Can manure make energy?

Yes, you can replace non-renewable substances (like coal, oil and gas) with manure, you burn the manure the same way you'd burn non-renewable sources to make energy. Like this the manure is known as biomass or biofuel.

Manure can also be used to manufacture methane, which is the same as natural gas.

How does the sun's energy create wind?

As the sun warms the Earth's surface, the atmosphere warms too. Some parts of the Earth receive direct rays from the sun all year and are always warm. Other places receive indirect rays, so the climate is colder. Warm air, which weighs less than cold air, rises. Then cool air moves in and replaces the rising warm air. This movement of air is what makes the wind blow.

What TE is stored in hot things?

Thermal energy is stored in hot things. When an object's temperature increases, its molecules move faster, resulting in higher thermal energy.

What are 2 disadvantages of one of the renewable energy resources?

One disadvantage of solar energy is that it is intermittent, as it relies on sunlight which is not available at night or on cloudy days. Another disadvantage is the high upfront cost of installing solar panels, despite decreasing costs over time, which can be a barrier for some individuals or businesses.

When was solar power invented?

Solar power as a concept has been around for centuries, but the first practical solar cell was invented in 1954 by Bell Labs. This marked the beginning of modern solar power technology.

What is geothermal energy considered a renewable resource?

Geothermal energy is considered a renewable resource because it is derived from the heat of the Earth's core, which is continuously generated through radioactive decay. This heat can be harnessed to generate electricity without depleting the Earth's resources. As long as the Earth continues to generate heat, geothermal energy will be considered renewable.

Why is nonrenewable energy better than renewable energy?

Advantages to renewable: Non renewable energy is worst than renewable for a number of reasons, but some of the main ones being that:

1.) As renewable energy does not use a limited fuel, it is resistant to rising prices, so as the price of oil goes up, the price of renewable energy wont.

2.) Renewable energy will last until the sun dies, about 5 billion years, so even when oil, coal and natural gas have ran out, the sunlight, tides (controlled by the moon not sun though) and wind will still be available to harness energy from.

3.) Without a limited fuel, renewable energy is cheaper, just build the generater (wind turbine or hydroelectric dam etc.) and watch the money keep rolling in without much going out apart from the odd repair now and again.

4.) Without fuel, renewable energy is good for the environment and does not contribute to acid rain or global warming apart from when building the generater to start with.

5.) Renewable energy does not create any waste products

6.) Without needing fuel, renewable energy can be used in the most isolated of places without any fuel reserves and due to many of the other advantages, it is also good at helping provide energy to developing countries.

Independance: renewable energy allows houses, villages or even countries become independent as they will not need to buy oil and fuel from other countries (whether this helps or metaphorically destroys the international economy probably depends on the situation however it certainly saves it's possessor money from having to buy fuel or electric from elsewhere)

How are renewable and nonrenewable energy different?

Yes, nonrenewable and renewable sources are different - very different. For example, nonrenewable sources such as fossil fuels harm the environment and will run out soon. Green renewable sources are good for the environment such as solar energy. It comes from the sun. That is why it is called solar energy.

Why is geothermal energy considered a renewable reasource?

Geothermal energy is considered a renewable resource because it is derived from the heat stored beneath the Earth's surface, which is continuously produced by the decay of radioactive materials and the heat from Earth's core. This heat source is essentially limitless on human timescales, making geothermal energy a sustainable and renewable option for power generation.

Is geothermal energy green?

Geothermal energy is thermal energy stored beneath the earth's surface. It is clean, renewable, and popular because it can be harnessed from almost anywhere in the world to produce heat and electricity.

Why geothermal energy is unlikely to become a main energy source?

Geothermal energy faces challenges such as location constraints, high initial investment costs, and uncertainty in resource availability. The technology also requires specialized skills and expertise for development and operation, further limiting its widespread adoption as a main energy source compared to other renewable energy sources like solar or wind.

Why are wind hydroeletric and geothermal energy resources not suitable for providing energy worldwide?

I think they are VERY suitable; but so far, government policies don't exactly favor renewable and clean energy options. That is, billions are given in subsidies to petrol companies, money which would really be better invested in clean energy options.

Why do we say geothermal energy is not sustainable?

Geothermal energy is considered sustainable because it is a renewable energy source that relies on heat from the Earth's crust. However, some concerns about sustainability include the potential for depleting local heat reservoirs if not managed properly and the release of greenhouse gases and other pollutants during the extraction and conversion processes. It is important to conduct thorough monitoring and consider environmental impacts to ensure the long-term sustainability of geothermal energy.

What are the negative effects of geothermal energy on the environment?

It is not the energy that will be dissipated out into the environment is doing the worst damage, it is taking out of the geothermal energy from the Earth that do. Geothermal energy keeps the Earth alive.

Which renewable energy source comes from Earth's interior?

Geothermal energy is heat derived below the earth's surface which can be harnessed to generate clean, renewable energy. This energy source may supply renewable power around the clock and emits little or no greenhouse gases -- all while (supposedly) requiring a small environmental footprint to develop.

Geothermal technologies use the naturally occurring heat located in shallow ground, hot water and rock below the earth's surface to generate electricity. Geothermal is considered a renewable source of energy because the earth's core generates nearly unlimited heat. The United States generates more electricity through geothermal energy than any other country in the world; 79% of the energy generated in the USA comes from California. Not all areas are suitable for geothermal energy utilization. With current geothermal technologies, electricity can be generated only where three key conditions are met: heat, fluid and natural permeability at depth. Small underground pathways conduct fluids through the hot rocks, carrying energy in the form of heat through wells to Earth's surface, driving turbines and generating electricity.

A new technology called Enhanced Geothermal Systems -- or EGS -- may be able to generate electricity anywhere there is hot rock at depth, greatly expanding the potential for geothermal power. EGS are man-made reservoirs created by drilling wells thousands of feet below the earth to access hot rock at the earth's crust. Highly pressurized cold water is pumped through the wells to cause pre-existing fractures of the hot rock to open up, increasing permeability - similar to the "fracking" technique used for enhanced oil recovery. This enables the water to flow through the cracked rock and pick up heat. The resulting hot water pumps back to the surface where it is depressurized to make steam, which spins a turbine to generate electricity. The water is then cooled and pumped through the wells again, repeating the same process and creating a closed-loop system.

What is the first requirement for the remains of a living organism to transform into a fossil fuel?

The first requirement for the remains of a living organism to transform into a fossil fuel is that they must be buried deep underground where there is high pressure and temperature. This burial process prevents the organic material from decomposing and instead allows it to chemically transform into fossil fuels like oil, coal, or natural gas over millions of years.

What poses a problem to long term use of alternative fuels?

Some challenges to long-term use of alternative fuels include the high cost of production and infrastructure development, limited availability of alternative fuels in comparison to traditional fossil fuels, and potential compatibility issues with existing vehicle technology and infrastructure. Additionally, concerns over energy density, efficiency, and environmental impact may also hinder widespread adoption of alternative fuels.

Why is geothermal energy considered a renewable resources?

Geothermal energy is considered renewable because it is sourced from the Earth's internal heat, which is continuously produced by radioactive decay of minerals. This heat source is essentially inexhaustible on human timescales, making geothermal energy a sustainable and renewable resource for generating electricity and heat.