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Giwoon And Will's Science

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Elizabeth Harris

on 25 November 2015

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Transcript of Giwoon And Will's Science

Giwoon And Will's Science=
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Why are Droughts Dangerous?!
When there is a drought, there is less water available for growing crops, farming animals, industry and our cities. Droughts also impact the environment by causing erosion, harming animals, causing people to pay more for food, and affecting our water supplies. Droughts are hard to predict and also hard to live with. When a drought continues for a long time, towns are at risk of running out of water and there are many areas in Australia that have water restrictions to help save water.
What is a drought?
Drought is an insidious hazard of nature. It is sometimes know as the ''creeping phenomenon'' The drought is always a difficult one to define, because it is often used in more then one context. In simple terms, it is the absence of water for a long period of time at a place where it is considered not normal compared to it's usual conditions.
How do droughts start?
Droughts happen when there is not enough rain for a long period of time. It's not like as dry spell there is so little precipitation that a whole region starts to dry out.
If you live in a place where most of the water you use comes from a river, a drought in your area can be caused by places upstream from you not receiving enough moisture. If you live in a place where most of the water you use comes from a river, a drought in your area can be caused by places upstream from you not receiving enough moisture. There would be less water in the river for you and other people who live along the river to use.


What causes a drought?
Australia is often affected by droughts because of our geography and changeable rainfall patterns. Our continent is located in a subtropical area of the world that produces dry, sinking air that creates clear skies and little rain. For most of the country, our rainfall is very low and irregular.
When do droughts start?
Droughts occur when there is not enough water to sustain people, plants and animals for an unusual period of time. Australia's last drought started in 2003 and was known as the Big Dry.



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