Saturday 22 March 2014

The Water Cycle

We started looking into the water cycle today. Some of us already knew some of the different parts of the cycle.

We watched the below video, from a cool website called brainpopjr.com to help us understand it a little bit better (I apologise for the watermark on the video).

We learnt that:

- the sun heats up the water causing it to evaporate (which means it changes from a liquid to a gas).
- As the water vapour rises into the atmosphere it cools down and turns back into a liquid, this is called condensation.
- The condensed water drops join together to make larger droplets, forming clouds.
- When the condensed water gets too heavy, it precipitates, which can be in the form of rain, snow, sleet or hail.
- The precipitation can fall in lots of places! It falls back into the rivers, lakes and oceans, it can soak into the ground, or it can fall on mountains and run-off into lakes, rivers and oceans.
- Then the cycle starts all over again!



Here's an awesome video on Ruma Iwa's blog that goes into a more detail.

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