|Sun is an abundant source of energy.
Almost all forms of energy are directly or indirectly connected to solar energy.
When we hang our clothes on the clothes line, they get dried up .This is due to the heat of the sun.
Plants use sunlight to make food. Animals eat these plants. Again when they decay they turn into fossil fuels.
Therefore fossils fuels are actually sunlight stored million of years ago.
Another example, to show sunlight is prevalent in all sources of energyis descibed below.
We do work, from the energy obtained from food. Food is got from plants that uses up sunlight to make food.
Hence our energy is derived from the sun.
There are many devices that use solar energy. Some of them are:
- Solar heater Ė This uses the sunís heat and light to heat up the water. The water from a solar heater is a rich source of Vitamin D.
- Solar power plants- This uses solar energy to generate electricity.
- Solar cell- The solar energy is stored in batteries and are used later for various purposes.Such a cell is referred to as the photovoltaic cell.
Directions: Answer the following questions.