Give Short answers:

What is ‘Solar Power’?

Solar power is the power generated from the sun’s heat. The sun emits a lot of heat which can be exploited for economic gains. The humans have successfully developed technologies which can use this heat to generate power. Although the maximum heat of the sun is absorbed by the atmosphere, still the amount received by the Earth is enough to generate power. This heat is used by photovoltaic cells or solar panels.

The amount of solar energy received by the world was calculated to be 3000-50000 exajoules (EJ) which is much larger than the total world energy consumption of 600 EJ, so it can be used widely.

Solar power is a renewable form of energy. This means that a lot of energy can be used, and this can be replenished on its own. It does not cause any pollution and is also not harmful to any living beings.

There are 2 technologies where solar power is used:

Solar cooker: It is a device which uses the sun’s energy to cook food. The basic underlying principle is that the black surface absorbs more heat and the glass plate used produces the greenhouse effect inside the cooker.

Solar panel: It is a device made of silicon which converts the energy into electricity. It is used in artificial satellites, space probes, traffic signals, radio, wireless technology etc.

There are many advantages to using this form of energy such as it is a renewable form of energy and is environment-friendly. It is also very easy to install and use. However, one major disadvantage is that it cannot be used on cloudy or rainy days.