Friday, June 28, 2019

the water cycle

water cycle

Have you ever thought about where the water we drink comes from? Many people do not even think about the water that flows out of a tap. All the water in the world is part of the water cycle. A cycle is when a series of steps repeat itself over and over. Each stage of the water cycle repeats itself. The earth is covered by at least three quarters of water. Most of this water on earth is salt water, 97 percent to be exact. This leaves 3 percent fresh water but only 1 percent is drinkable. The water cycle goes through three main stages evaporation, condensation and precipitation. After these stages take place we have our lovely drinkable water.
Evaporation happens when the sun heats up the water in seas, rivers, lakes or bodies of water. The heat from the sun makes the water evaporate from a small body of water like a puddle. Once the heat is added to the liquid it starts to transform the water into a gas called water vapor. Water vapor is actually invisible so you can’t see it. The water vapor goes high up into the sky. However once it reaches high up into the atmosphere it starts to get cooler which then starts the next stage in the water cycle.
The next stage is condensation. How does condensation work? Condensation is when water vapor gets higher and higher into the atmosphere. The water vapours starting to cool down turning back into tiny water drops that form together to make a cloud in the sky. The clouds gets heavier and heavier until the clouds are forced to drop the tiny water droplets.
So how does precipitation work? Precipitation is when the clouds get heavier and colder that the water in the cloud turn back into tiny water droplets.  They come together as water vapour that turns into tiny little droplets. The water droplets can freeze, making them fall as snow, sleet or hail. The higher the cloud the more chance there is of snow because the air is colder and thinner which impacts on the temperature of the water vapour.  This means there is no snow in hotter areas as the water vapour does not freeze in the warm temperature. All water will fall back down to earth, this is precipitation.  
So those are the steps in the water cycle and to keep this great cycle going we need to not waste water to help the earth.                                         

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