Ellie (12) asks “What are the damages of hurricanes?”

Great question Ellie. I was going to ask my team to tackle this, however for some reason the question was left unanswered so to apologize I think I will try to answer it myself.

How is a hurricane created?

Air is made up of tiny molecules. When molecules are heated, they move faster. As they move faster they become become spaced farther apart, which makes the air less dense – meaning that there are fewer molecules in a given volume. This also means that the air has a lower overall pressure – pressure is the push of the gas on it’s surroundings. In comparison, cold air is made of more tightly packed molecules, and so it is denser and has relatively higher pressure.

The warmer, lower pressure air begins to move upwards and therefore it creates space below it which is filled by the colder higher pressure air. The warmer air ‘floats’ on the colder air. It also carries with it water vapour – water that has evaporated and contains lots of energy. A wind begins to be created. The hotter the air near the surface of the sea, the lower the pressure and the faster the rise.

As this warm air gets higher it begins to cool and also the water vapour that would have risen with it begins to turn back to water. A cloud begins to form. The energy of the condensing water vapour is given to the cloud.

The cloud of colder air and water vapour begins to move in circles (because the Earth is rotating). It meets other storm clouds. The hurricane is forming and is being fed by the warm air close to the warm sea.

What are the damages of the hurricane?

The strong winds of a hurricane can push water up and onto land. This water can cause major flooding and damage to homes, cars, and boats. Heavy Rains – Hurricanes can cause heavy rains that flood places inland and away from the center of the storm.

This video will help explain the formation of the hurricane.

 

 

 

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