Wednesday, May 23, 2012

Explanation writing about natural disasters

L.I - Explanation writing with a focus on nominalisation



Cyclones



A lot of destruction in the Southern Hemisphere are caused by cyclones.

Cyclones develop over seas that are at least 26 degrees celsius on the surface. These seas are usually near the equator. The sun heats the air over the sea and the air rises which makes low air pressure. As the air rises it gets more and more moisture which then condenses into thunderstorms.

The earth spins on its axis the air spins as well. The air bends upwards and inwards. This makes a type of cone, and at the centre of the cone there is an eye where there is no rain and very little wind. Cyclones are basically cones of thunderstorm.

A fully developed cyclone can pump out more than two million tonnes of air per second. This results in more rain falling in one day than what would fall in a year in a city like London.

The most usual places that cyclones hit are out at sea and Northern Australia, South East Asia and Pacific Islands. When the cyclone hits land many things go wrong. There are things like houses getting ripped apart, cars, animals and personal belongings being destroyed. Of course there are also people getting torn away from civilisation and getting flung around until eventually they die or land somewhere different.

When a cyclone stays out at sea it can become deadly for fishing boats. The winds hitting the sea can cause storm surges which are when the sea turns into massive waves. These waves can easily flip boats and cause mini tsunamis.

This is the basic explanation of a cyclone. It is a mass destructor of the Southern Hemisphere and can be dangerous.

By Maria

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