they have to be interesting
2007-02-28 13:28:35 · 2 answers · asked by My Life is in Black and White 4 in Environment
Solar energy comes from sun and is free.
It is non-polluting source of energy.
Solar water heaters make the best use of suns energy.
PhotoVoltaic (PV) cells convert sunlight to electricity.
Solar energy can be used for cooking (Solar cookers)
The amount of solar energy impacting the surface of earth is 1000 watts per square meter, which is about 32.8 million MW every second on the Indian land mass. A large part of the incident heat is reflected to the outer space or radiated back to space.
2007-02-28 18:13:55 · answer #1 · answered by funnysam2006 5 · 0⤊ 0⤋
Solar energy comes from the sun
When the sun is out things heat up
Energy can do work
Humans need help doing work
Work is hard
2007-02-28 22:28:48 · answer #2 · answered by RayM 4 · 0⤊ 0⤋