Conservation of Energy
We get energy from several energy resources, but on the other hand we need to conserve this energy for our future use also.
Natural resources are the materials that are obtained from the Earth, and are used to support life and meet our needs. The most common examples of natural resources are: Sunlight, Water, Natural Gas and Coal.
All the natural resources have been classified under following two broad categories: Renewable or Non-conventional sources of energy and Non-renewable or Conventional sources of energy.
The major alternative sources of energy are: Solar energy, Wind energy, Biomass energy and hydroelectric energy.
Plants use solar energy to make food by the process of photosynthesis. Energy is passed on to the animals at different levels through the food cycle.
Solar energy can be used through two different means: Solar thermal route and solar electric route.
Biomass means biological materials, including gases that are generated from the decomposition of biological materials such as wood, energy crops and agricultural residues.
The energy possessed by moving air is called wind energy. It can be converted into mechanical energy and electrical energy.
The energy obtained from the vast movement of water between high tides and low tides and from open ocean currents is known as tidal energy.
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