Green Energy

Green energy isenergy that is produced in a manner that has, less of a negative impact to theenvironment than energy sources like fossil fuels,which are often produced

with harmful sideeffects."Greener" types of energy that often come to mind aresolar,wind,geothermal and hydro energy.There are several more,even includingnuclear

energy,that issometimes considered a green energy source because of its lower waste outputrelative to energy sources such as coal or oil.

2.The goal of greenenergy is generally to create power with as little pollution as possibleproduced as a by-product. Every form of energy collection will result in some

pollution,but thosethat are green are known to cause less than those that are not. Most people whoadvocate greener sources of energy claim that the result of worldwide use

of green energy willresult in the ability to preserve the planet for a longer time.Greenhousegases,a by-product of traditional sources of energy such as fossil fuels arethought

to be causing globalwarming,or the process of the Earth heating up at an accelerated pace.

3.It is notcompletely necessary for green energy sources to come from places like solar orwind fields,which are examples of green"power plants".A green energysource can

be a building thatis designed in a way that it keeps itself cool in the daytime and heated in thenight through its architectural design rather than having an air-conditioningor a

heating system. Theconservation of energy through architectural（建筑学的）design becomes, itself, a green energy source.Similarly, many sources of green energy can

come directly fromthe area in which the energy is needed rather than from an outside source.

4.One of the goalsof green energy technology is to take existing fossil fuel energy technologyand clean it up so it is produced more cleanly. One such case is that of clean

coaltechnology,where scientists are trying to find ways to extract energy from coaland other fossil fuels without all of the harmful side effects.The success ofsuch these

types of greenenergy depend upon the ability to extract harmful by-products from fossil fuelswhile not only being energy efficient,but by being cost efficient as well.The success ofgreen energy depend upon the ability to extract harmful by-products from______.

A.global warming

B.carbon emission

C.lower waste output

D.a green energysource

E.fossil fuels