Solar energy, Science

Assignment Help:

Solar energy:

The energy we get today from the fossil fuels like coal, is in reality sun's energy,  trapped in them millions of years ago. Plants make their food and grow because they use solar energy for photosynthesis. Millions of years ago, huge forests got buried in the earth's crust and under great pressure and temperature,  they were converted into coal or oil. Hence coal and oil are  called fossil  fuels. Solar  energy is the great source  for production of vegetation which serves as food and fuel for us. However, nowadays, we have learnt to trap solar energy for various purposes. Solar energy can be used directly to give us hot water during winter, or run a refrigerator. It can be used for heating rooms in colder regions. It can also be used, with the help of a "photocell" to produce electricity for driving vehicles and illumination of streets. In a desert like Rajasthan, the earth's surface receives solar energy at the rate of 200 watts per square metre per hour. Since this is an unfailing source of energy, it would be a great advantage to develop cheap and efficient photocells or photovoltaic devices  to harness solar energy. A feature of using solar energy is  that it can be generated where needed. Solar cookers are being used  in many homes to cook food. Photocells are  also becoming common, though their efficiency has to be improved and their price brought down.  

2176_Solar energy.png


Related Discussions:- Solar energy

The fujita scale is used to classify intensities of, The Fujita Scale is us...

The Fujita Scale is used to classify intensities of: Tornadoes

Albanian, what is the mendeleyev

what is the mendeleyev

Egg or chicken, what comes first? egg or chicken?

what comes first? egg or chicken?

For chemically reactive wastes, For chemically reactive wastes : The chemi...

For chemically reactive wastes : The chemical property of the waste could be used in its removal in a number of ways as given below: i) Some water-reactive waste could be dispo

Protozoa, #question.what is the importance of pritozoa to humans?.

#question.what is the importance of pritozoa to humans?.

Explain ascorbic acid, Ascorbic Acid (vitamin C) Although the antiscorb...

Ascorbic Acid (vitamin C) Although the antiscorbptic  (preventing the disease scurvy) effects of citrus hits  was known for a long time, the first  important step  towards its

Explain kaleidoscope brainstorming process, Question 1) What is decisio...

Question 1) What is decision making? Explain the various steps followed to observe effective decision making 2) Explain Kaleidoscope brainstorming process 3) Discuss SWOT Analy

Botany, Hey, I have to ask an expert questions for an assignment and I was ...

Hey, I have to ask an expert questions for an assignment and I was wondering since you have a degree in botany how would a multi vitamin affect a plant?

Explain the soil texture and methods of analysis, Soil Texture and Methods ...

Soil Texture and Methods of Analysis Soil texture is the basic property of a soil  related to the  size of individual mineral particles, which cannot be easily altered.  It spe

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd