How cyclone develop and what is …

Fast moving air towards a centre; usually with heavy rain; is known as cyclone. Wind direction, wind speed, humidity and temperature together create cyclone.

When water vapour in the clouds cools down it releases heat. This heat warms the air around the clouds. The warm air rises up and creates a low pressure zone. This low pressure zone is quickly filled in by cooler air from the surrounding. This creates a system in which the centre is having very low pressure and is surrounded by wind moving around it. The wind from the surroundings moves in a circular fashion towards the centre and gives rise to cyclone.

Destruction caused by Cyclone: A strong cyclone can be very destructive.
Since cyclone is accompanied with high speed wind, it can damage houses, telephone poles, electric poles and uproot trees.
Strong wind of the cyclone may push the sea water towards the sea shore in the form of high wave. These high waves may damage houses and push water to low land which may be accompanied with loss of life and properties.
Being the area of very low pressure, eye of cyclone lifts water in the centre. This may cause the rise of water up to 3 to 15 metre high. This appears like a water wall. This water wall; when pushed towards seashore; can inundate a large area, which can cause the loss of life and property.