Which of the following is TRUE of alternative sources of energy like solar and wind power?
by admin on Tuesday, October 25th, 2011 | 10 Comments
a They can partially reduce the need for coal and nuclear power.
b They will never reduce the need for coal or nuclear power.
c They are too expensive to be considered.
d They are still far off because of the technology needs to be developed.
e Until they can supply a large amount of energy, they should not be considered.
A
How about :
f) they are on my roof today providing the majority of electrical power for my home.
but a) is clearly true – they do partially reduce it today.
b) is clearly not true, see a:
c) also clearly not true, they are in use and clearly more than considered, they are implemented
d) they are not far off; solar and wind are deployed at large scale today
e) rather nonsensical, we have over 35GW of wind, 342 MW of solar photovoltaic (PV) electric power, 139 thermal megawatts (MWTh) of solar water heating, 762 MWTh of pool heating, and 21 MWTh of solar space heating and cooling today.
A but only by default. That is only a ‘best’ answer form those available. The real answer is that they may well be able to replace the need for coal and nuclear power. At this moment they already reduce the need for those 2 sources. In future renewable can and will replace them.
d
A – TRUE they can and are reducing the need for coal and nuclear power
B FALSE they are already reducing the need for coal and nuclear power
C FALSE they are already being used to some degree – In some cases, people have even chosen to spend a little bit more money so as to reduce their coal and nuclear dependence; the extra cost provides them a value they are willing to pay for. Still, the costs are coming down enough that many find a positive return on investment (ROI) within an acceptable time frame.
D FALSE the basic technology exists and has for some time. But, work continues on making the systems more efficient, less costly, work out the large scale application problems, adaptable to more differeing applications, situations, and environments.
E FALSE/TRUE This is an argument of many. But, increasingly, they are supplying larger amounts of energy. In Holland, for example, wind is a significant contributor to the total amount of energy produced and used.
i was thinking about it and i have narrowed it down to one of the following
a They can partially reduce the need for coal and nuclear power.
b They will never reduce the need for coal or nuclear power.
c They are too expensive to be considered.
d They are still far off because of the technology needs to be developed.
e Until they can supply a large amount of energy, they should not be considered.
I would say , A.. Through these alternative energy, the need to utilize coal and nuclear power can be greatly reduced. Though not really eliminate the need for such fossil-based energy as that would entail bigger solar system, thus more money because the bigger solar system you will install, the higher the price of the system. Which makes letter c also true (in a way), as it can really be expensive, however it;s not impossible to consider.
A would be the best choice. Although they can be really expensive but I do not think it should not be considered as people can have benefits from it. As time goes by, solar technology will soon be cheaper and more people are going to appreciate it. A lot of researchers and developers are enhancing / improving the solar technologies and making it more affordable to all of us.
A.
Alternative energy is usually considered a break from non-renewable fossil fuels and oil to a renewable, cleaner system of producing energy. Solar and wind power are also clean forms of energy that does not give off polluted energy. In fact, they are also environmentally friendly options and not easily depleted sources of power. Indeed, there are other alternative and clean sources of electricity in nature and giving attention to these alternatives can help you a lot in saving money as well as helping your environment as well. A major benefit to researching and using alternative energy options is that we waste less of the fossil fuels we actually have left, and protect our ability to eventually maintain energy in spite of few or no non-renewable energy sources.
A.