Summary about Energy Source

Alternative
Energy
Source:

• Wind Energy
• Water Energy
• Solar Energy
• Geothermal Energy

Some information about some Alternative Energy Source:

Wind Energy:

wind energy is a converted form of solar energy. The sun's radiation heats different parts of the earth at different rates-most notably during the day and night, but also when different surfaces (for example, water and land) absorb or reflect at different rates. This in turn causes portions of the atmosphere to warm differently. Hot air rises, reducing the atmospheric pressure at the earth's surface, and cooler air is drawn in to replace it.

Water Energy:

Water, like many substances, contains two kinds of energy. The first kind of energy is called kinetic energy. This is energy that is used during the execution of processes, such as movement. Because of kinetic energy water can flow and waves can exist.
But water can also contain potential energy. This is energy that is stored in the water. Stored, but not used. This energy can become useful when water starts to flow. It will be transferred to kinetic energy and this will cause movement.


Solar Energy:

Solar collectors collect solar radiation and transfer it as heat to a carrier fluid. It can then be used for heating. Solar energy is inexhaustible and nonpolluting, but converting solar radiation to electricity is not yet commercially competitive, because of the high cost of producing large-scale solar cell arrays and the inherent inefficiency in converting light to electricity.

Geothermal Energy:

Power obtained by using heat from the Earth's interior. Most geothermal resources are in regions of active volcanism. Hot springs, geysers, pools of boiling mud, and fumaroles are the most easily exploited sources.Thermal energy contained in the earth; can be used directly to supply heat or can be converted to mechanical or electrical energy.

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