Question

1.Write a short notes on the following:
a) Water Cycle
b) Hydro-electricity

Answer 1

The water cycle or hydrologic is a continuous cycle where water evaporates, travels into the air and becomes part of a cloud, falls down to earth as precipitation, and then evaporates again. ... These areas are usually close to oceans or large bodies of water that allow more water to evaporate and form clouds.

Hydroelectricity is electricity produced by movement of water. ... This causes the turbine to turn, which turns a generator which makes electricity. This renewable energy method makes about one sixth of the world's electricity. It produces less pollution than the fires of steam engines do.

Answer 2

Water : The continuous interchange of the forms of water on Earth is called the water cycle or the hydrological cycle. It involves the three different processes of evaporation, condensation and precipitation. Water from the surface of the Earth evaporates on heating and changes into water vapour (from a liquid to gas). The water vapour that rises up in the air gets cooled by the low temperature there and condenses (changes back to the liquid state) to form clouds, droplets of water and ice crystals. When the cloud particles get too heavy to remain suspended, they fall back to the Earth as precipitation. Precipitation occurs in the form of hail, rain, snow, sleet, fog, mist and dew.....

Hydro- electricity - hydroelectric power is the electricity generated with the help of flowing water.
advantages are that it is a clean source of energy a large amount of energy can be created.......

Hope it helps ......