renewable and non renewable energy sources?
Topic: renewable and non renewable energy sources?
June 27, 2019 / By Ailee Question:
right so im year 10, and we have an exam coming up in november but we havent covered physics, and i took separate sciences, so i should have.. and well our teachers scared we're gonna fail so he set us homework to sort of wise us up about it? the homework was to write a letter to gordon brown explaining the current situation on renewable and non renewable energy sources, what they are, why they are going to run out, what will we do when they do run out, what the effects on us and the environment are, what we can do to prevent or prolong them from going, (obviously about the non renewable ones)
and um this sorta has to be in tomorrow, he dosent give us much time, ive been looking through revision books and all over the internet since half 3 and just dont know the answers to these questions, your help would be GREATLY appreciated :/
Best Answers: renewable and non renewable energy sources?
Tobin | 2 days ago
1. Non-renewable energy sources = Coal, gasoline, heating oil, natural gas.
Renewable energy sources = sunlight, wind, firewood.
2. The non-renewable energy sources are deposits (plant matter, compressed) hundreds of millions of years old. New deposits are difficult to find.
U.S. supplies: 200-year supply of coal, 100-year supply of natural gas.
World supply of gasoline and heating oil is a 40-year supply.
3. Effects on the environment: Burning of non-renewable resources releases carbon dioxide to the atmosphere, causing Global Warming, major changes in climate. The carbon dioxide is trapped in the atmosphere for 200 years, so major climate changes are fairly permanent, and cause farms to produce less vegetables and grains, so people will starve.
4. What we can do: Build solar cells to convert sunlight to electricity. Build wind turbines to convert wind to electricity. Power our cars and houses with the electricity produced by solar and wind energy.
good luck with your paper!
👍 92 | 👎 2
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Originally Answered: What are three reasons our government should invest in alternative/Renewable energy sources?
Reduce dependence on foreign fuel supplies
Reliable cost (eg you know how much it'll cost to install a solar panel, but you don't know the price of gas next year, or in 10 years...)
Reduced global warming
Reduced environmental damage in lots of other ways - don't need to blow up mountains to get at the coal, or take a look at the Niger delta to see oil extraction at work.
Also, except for biomass, they are low or zero air pollution electricity sources. Air pollution kills tens of thousands of Americans every year. A switch to pure renewable/nuclear electricity would save tens of thousands of American lives every year (in the UK deaths are something like 10,000/yr iirc?).
A renewable source is something that will never run out, for example, electricity, it will always be able to cme from somewere. Whereas a non-renewable source is something that can eventually run out, for example, petrol, petrol is made from materials such as oils that will soon enough run out, ways to prevent this happening would to be use less petrol. This is why many companies are beginning to invent electric cars, to stop the petrol running out. Another example of a non renewable source is fossil fuels which are burnt in order to release and proudce coal, oils and different gases. Fossil fuels take millions of years to form so although more will form for the time being we could run out, to prevent this happening less would need to be used or subsitutes should be found.
Hope that helps
Good Luck x
👍 30 | 👎 -5
Coal, natural gas, oil ( fossil fuels ) are actually renewable - it just takes millions of years to renew them; I'm also not sure this is the answer your teacher/professor is looking for. If you state that it takes millions of years to renew these sources it should be acceptable.
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Non-renewable energy sources
Petroleum: When internal combustion engines were developed, they were far smaller and much more efficient than steam engines. Because of their size, these new engines could be used by individuals. They soon became standard features in automobiles, a new form of personal transportation. Petroleum became the fuel of choice because it was high in energy yet low in volume. This decreased the overall mass of the automobile and made it more energy efficient. As the 20th century progressed, German and then American chemists discovered petroleum could also be also used to make industriasl chemicals. Americans began using it to make their most characteristic substance - plastic. The Chineese invented paper, the Romans concrete and Americans will be rembered for the invention of plastic.
At the present rate of consumption, the world's petroleum supply will last at most another 50 years.
Coal : This was the fuel of choice in the 19th century. It is high in energy but also quite massive. The engines it fueled were equally massive and continue to be so. However, steam engines can afford to be large and inefficient because of the sheer abundance of coal. It is the cheapest of all non-renewable resources. Locomotives now have petroleum fueled engines, but electric generation still relies heavily on steam engines which drive the dynamos which produce electricity.
There is probably enough coal to last at least 200 years.
Nucleur: By the middle of the 20th century, nucleur physics was known well enough to allow energy generation using nucleur fission. Radioactive metals like Plutonium decayed and the heat was used to drive steam engines. Nucleur fuel is extremely high in energy and very low in mass. However, it is so rare that it is only econominical when used industrially. It is non-renewable because it can't be re-created on earth. It originally formed during the explosion of a supernova billions of years ago.
The amount of nucleur fuel is probably about the same as petroleum.
Note: all these energy sources depend on the sun, which will continue to emit power for the next 10 billion years.
Wind : This was originaly used in windmills which served as grain mills but in the Netherlands they serve as sumps which drain the land of seawater. Wind is inexaustable because it is caused by the sun warming the plannet. It can be intermittant, but in many areas the wind blows fairly constantly. Modern windmills use the wind to turn dynamos to produce electricity.
Water: Hydroelectric plants use falling water to turn dynamos to produce electricity. The water pressure develops after rivers are dammned, creating reserviors. Like the wind, rain is caused by solar radiation and is completely renewable. The only pre-requisite is a large river, preferably flowing through a canyon. China's new three gorges dam is the largest hydroelectric plant in the world.
Geothermal: Because of radioactive decay, the interior of the earth is hot enough to melt lead. In some places the interior is close enough to the surface for this heat to escape directly into the atmosphere. It can be used to run steam engines to generate electricity. Iceland is such a place and generates so much geothermal energy it can use electricity to make Hydrogen as a source of fuel. Hydrogen fuel is not cost effective unless the electricity used to make it is extremely cheap. This is only possible with geothermal or hydroelectric electricity.
The sun: Solar energy averages about 2 watts per square centemeter on earth's surface. Solar pannels are only 10% efficient, but they can be mass produced and large solar arrays can generate quite a lot of electricity. Germany has proved this by installing the on rooftops and along highways. Sadly, America is so influenced by its own pertochemical industry, solar power development has been severly restricted in this country.
👍 28 | 👎 -19
Originally Answered: need thesis for renewable energy resources vs. fossil fuels?
your thesis shoudl eb a question, perhaps you need to refine your topic and choose one or two resources as oppose to all but perhaps.
TOdays society is dependent on fossil fuels however if they continue on this path society will be in great peril, and is the reason why raoceity shoudl switch its dependency to renewable resources.