What is solar energy?

Question

I need help! I need a web site that will tell me the following, what is solar energy, what are the positives and the negatives of solar energy. thanks ba whole lot if you help me.

Answer 1

Solar power is the technology of obtaining usable energy from the light of the Sun. Solar energy has been used in many traditional technologies for centuries and has come into widespread use where other power supplies are absent, such as in remote locations and in space.

Advantages and Disadvantages

Advantages

Inexhaustible fuel source
No pollution
Often an excellent supplement to other renewable sources
Versatile--is used for powering items as diverse as solar cars and satellites

Disadvantages

Very diffuse source means low energy production--large numbers of solar panels (and thus large land areas) are required to produce useful amounts of heat or electricity
Only areas of the world with lots of sunlight are suitable for solar power generation

Answer 2

Solar energy is energy derived directly from energy
radiating from the sun.

Be careful, however. Virtually all energy on Earth
is derived from the Sun. For instance, oil comes from
plants which get their energy from photosynthesis
which is powered by light from the Sun.

However, people don't consider burning oil as
a form of Solar energy. Generally, Solar Energy
refers to large slats of material that convert light
directly into electricity through a chemical reaction.
"Photovoltaic cells".

That is, people put these slats on their roof or setup
huge panels which they orient to be directly
perpendicular to the Suns rays.

If they were cheaper to construct, we would simply
cover every possible square inch with them and
forget oil etc - but they are expensive and do
occasionally require maintenance.

The rovers on Mars (spirit and opportunity) are
both powered by photo-voltaic cells. JPL thought
that both robots would stop working after 90
days because their solar cells would get covered
with dust.

However, Mars also has wind, which occasionally
cleans the cells off - so, like the Energizer Bunny,
they keep going and going and going ...

Answer 3

solar energy is a type of energy from the sun,it has replaced electricity and fuel and gas,almost everything can work by using solar energy.solar energy is widely used in every countries,It can reduce the carbon emission,so it can protect envrionment.The disadvantage is the price is more higher at first pay,but you will bebefit more in your after use.

Answer 4

Solar energy is energy that is harvested from the sun by using one of many methods. Check out this sight.

http://en.wikipedia.org/wiki/Solar_energy

Answer 5

there is not any "primary nuclear reactor", yet whilst we take a one million GW nuclear plant, it could generate approximately 8 terawatt-hours/year. A two hundred watt image voltaic panel can generate a pair of million kilowatt- hour/day, or 365 kwh/year, so because it is approximately 21 million two hundred watt image voltaic panels. notwithstanding, the skill output from the nuclear plant is controllable by utilizing the operators, the place image voltaic panels in basic terms perform at finished output for some hours/day (on sparkling days - much less if there is cloud). subsequently, to income the two, you will possibly be able to desire to element in some type of skill storage or backup that will develop the cost of the image voltaic installation (possibly by utilizing a element of two or greater). in spite of claims of image voltaic being greater value-effective than coal now, whilst one compares apples to apples (i. e. total skill produced, and controllability) image voltaic continues to be quite a few situations greater costly than coal, and approximately two times as costly as nuclear even interior the U. S. A gram of U-235 could make usable skill equivalent to 3 metric a great number of coal. image voltaic skill production has no dangerous by utilizing-products, yet manufacture of the panels can contain some very dangerous components like fluorine (for silicon panels) or cadmium (for CdTe panels). this is a factor of the reason panel manufacture has long previous to Asia - they have fewer environmental rules and it is much less complicated to get rid of the byproducts of production. DK

Answer 6

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Answer 7

solar energy is sun energy which can be converted into electricity and it can burn you from the uv rays

Answer 8

Did you try Wikipedia?

Answer 9

I found

http://en.wikipedia.org/wiki/Solar_power

Wikipedia is our friend. :-)

Answer 10

http://en.wikipedia.org/wiki/Solar_power

http://www.eia.doe.gov/kids/energyfacts/sources/renewable/solar.html

http://www.solarenergy.org/