Energy source on the Earth's surface comes
from solar energy. Eg heat energy from the sun can dry rice, wet clothes and so
on. Solar light energy is used by plants to make food and plants are eaten by
other creatures. So it is clear, or it can be said, that the main source of
energy on our earth is the sun.
The sun is very hot. Solar thermal
approximately 150,000 times hotter than boiling hot water. Energy radiating
from the sun to the earth as a wave. The wave is referred to as electromagnetic
waves. The sun as a primary source of energy.
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