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What is a major disadvantage of using fossil fuels?
They warm the planet.They release greenhouse gases.They release Carbon Dioxide back into the atmosphere. They therefore help to cause global warming.They also release poisonous gases such as Carbon Monoxide.They are a non renewable resource that releases long sequestered CO2 (a greenhouse gas) into the atmosphere.
What are some alternates to fossil fuels?
1.solar energy2.electricity3.fuel cells4. methanol5. ethanol6. biodieselBio-DieselBio-Diesel is a kind of diesel fuel derived from vegetable oil and animal fat. It is an alkyl ester which is obtained by trans-esterification of vegetable oil using ethyl alcohol. It is often used in a blended form along with the normal diesel. So, currently it is mostly used as a diesel fuel additive. This blending of bio-diesel with normal diesel, reduces emission of pollutants. It has excellent lubrication properties. It is being widely introduced all around the world in every form of locomotive.Bio-AlcoholAlcohol derived from plant sources can be used as an effective alternative to fossil fuel. Ethanol, Butanol, Methanol and Propanol are the alcohols of interest which can be used as fuels. These four types of alcohol can be easily derived from biological sources. They have properties which make them useful as fuels in automobile engines. In fact, Butanol is very similar to gasoline and has a comparable energy density! Methanol and ethanol have high octane rates. Ethanol can be produced from sugar fermentation and is indeed widely produced around the world, now as an alternative fuel.HydrogenThe properties of liquid Hydrogen, make it an ideal candidate for use as an alternative to fossil fuel. In normal conditions of temperature and pressure, molecular Hydrogen has a peaceful co-existence with oxygen and does not burn without input of extra energy. Hydrogen fuel cells have been developed which use molecular Hydrogen as an effective form of alternative fuel. The Hydrogen Fuel cell, convert chemical energy contained in a Hydrogen molecule, to electrical energy. The major advantage of Hydrogen as alternative fuel is, that its unit mass contains 2.8 times the energy contained in the same mass of gasoline. Hydrogen powered cars are already a reality but the problem lies in the cost of production. Until that cost is brought down, this technology is not commercially viable.Liquid NitrogenLiquid Nitrogen based cars have been developed using nitrogen powered internal combustion engines. Regenerative braking technology, which stores the impulse generated through braking, uses liquid nitrogen as fuel. A liquid nitrogen car is much like an electric car in its circuitry, except that the batteries are replaced by liquid nitrogen fuel tanks.Vegetable OilDiesel engines have been run on fuel which is a blend of processed vegetable oil and normal diesel. It has been tested as a fuel and is found to be an eco-friendly alternative.These are some of the alternatives to fossil fuels, available currently. The list is short but certainly promising! In the future, more and more such alternatives will be made available, as the new promising technologies like hydrogen fuel cell and hybrid car technology is made more affordable. By promoting the use of these alternatives to fossil fuels, we can make our world a greener and a safer place to live!
What is an advantage of using solar wind and hydroelectric power instead of fossil fuel?
Hydropower does not produce emissions of CO2 or other combustion products such as SO2, and the price of the power input is known and invariable once the civil engineering to build the dam etc has been completed, and not subject to fluctuation on the world market.
What is a source of energy that needs another source of energy to produce it?
Nuclear energy requires an external source of energy to initiate the nuclear fission or fusion reactions that produce energy. This initial energy input is typically in the form of electricity or another type of fuel to start the chain reaction.
Can you conserve geothermal energy?
You can not conserve it because it is heat from the earth making it difficult. Many people will use this to heat there houses.. +++ In theory it is inexhaustible from a human point of view but its problem is that since it relies on drawing heat from the ground it will cool the volume around the collectors. This will lost heat will be renewed but it will take a while. Also, you'd have to consider if the useful heat output from a given plant is sufficiently greater than the input electrical energy needed to drive the system; and this will be specific to the site. You cannot "conserve" the heat in a scientific sense but you might be able to store it for slow release, rather as in an electric night-storage heater.
What is the block diagram of fossil fuels input to electricity output?
c.
What is the common form of input energy. why?
The common form of input energy is electrical energy because it is versatile, easy to transport, and can be converted into other forms of energy efficiently. Additionally, it is widely available and can be generated from various sources such as fossil fuels, renewable sources, and nuclear power.
What is causing globalwarming?
It is caused by the increased input of CO2 or Carbon Dioxide into the atmosphere by human beings through burning fossil fuels for energy. This traps heat which inturn cooks the Earth.
What is the total energy input into the atmosphere from all sources?
The total energy input into the atmosphere comes from various sources such as solar radiation, geothermal heat, and human activities. Solar radiation is the primary source, providing the majority of the energy input. Geothermal heat from Earth's interior also contributes, while human activities such as burning fossil fuels and deforestation add additional energy to the atmosphere.
What process does the energy comes from?
Energy comes from various sources such as sunlight (solar energy), fossil fuels (coal, oil, natural gas), wind, water (hydropower), nuclear reactions, and biomass (organic matter). These sources provide the input needed for processes that convert the energy into usable forms for activities like heating, electricity generation, and transportation.
Why can't we get energy from water vapour and carbon dioxide?
Water vapor and carbon dioxide are stable molecules that do not readily release energy when broken down. While they are involved in energy processes like photosynthesis, where plants convert carbon dioxide into glucose using sunlight, they do not serve as direct energy sources themselves. Instead, energy is primarily harnessed from fuels like fossil fuels or biomass, which contain more energy-dense compounds. Additionally, extracting energy from these molecules would require significant input energy, making it inefficient.
What is Manufacturing fossil fuel energy is much less efficient then manufacturing?
Manufacturing fossil fuel energy is less efficient than manufacturing renewable energy sources due to the significant energy losses that occur during extraction, transportation, and conversion processes. Fossil fuel extraction often requires substantial energy input, while burning these fuels releases greenhouse gases and other pollutants, further diminishing efficiency. In contrast, renewable energy technologies, such as solar and wind, harness natural resources directly, leading to lower energy losses and a more sustainable production cycle. This efficiency gap highlights the benefits of transitioning to cleaner energy alternatives.
Why is the sun considered to be original source of most energy resources?
The sun is considered the original source of most energy resources because it provides the primary energy input for processes like photosynthesis, which creates biomass, and drives wind and ocean currents that can be harnessed for energy. Fossil fuels also derive their energy from the sun, as they are formed from organic matter that originally received energy from sunlight.
What is a major disadvantage of using fossil fuels?
They warm the planet.They release greenhouse gases.They release Carbon Dioxide back into the atmosphere. They therefore help to cause global warming.They also release poisonous gases such as Carbon Monoxide.They are a non renewable resource that releases long sequestered CO2 (a greenhouse gas) into the atmosphere.
Why is there a carbon cost for for the process of cracking a hydrocarbon?
Cracking a hydrocarbon involves breaking larger hydrocarbon molecules into smaller ones, which requires energy input. This energy typically comes from burning fossil fuels, releasing carbon dioxide into the atmosphere and contributing to carbon emissions. This process adds to the overall carbon footprint of hydrocarbon processing.
How does energy efficiency affect global warming?
The higher the fossil power plant efficiency the less input fossil fuel burning and hence the less green house gas emissions and accordingly the less global warming.
Why is a spark of energy requieried to begin the chemical reaction of burning a fossil fuel?
The spark of energy is needed to initiate the combustion process by breaking the bonds within the fossil fuel molecules, creating reactive intermediates that can undergo further reactions with oxygen to produce heat and light energy. This initial energy input is required to overcome the activation energy barrier and start the combustion reaction.
