Energy Rsources Solar Power

Where does solar come from? The sun has produced energy for billions of years. Solar energy is the solar radiation that reaches the earth. Solar energy can be converted directly or indirectly into other forms of energy, such as heat and electricity. The major problems (1) It is intermittent and variable. (2) the large area required to collect .
Solar energy is used for heating water for domestic use, space heating of buildings, drying agricultural products, and generating electrical energy.

Photovoltaic systems produce clean, reliable electricity

without consuming any fossil fuels.

In the 1830s, the British astronomer John Herschel used a solar collector box to cook food during an expedition to Africa. Now, people are trying to use the sun's energy for lots of things.

Do the Quizz

http://www.kids.esdb.bg/newenergy.html