Water never leaves the Earth. It is constantlybeing cycled through the atmosphere, ocean,and land. This process, known as the watercycle , is driven by energy from the sun. Thewater cycle is crucial to the existence of life onour planet.
Water Cycle Fun Facts• Water is essential to our planet’s life and without it nothing could survive! The globe is two thirds covered by water, but 93% is ocean water, toxic to humans, plants and animals.• There is the same amount of water on earth now as there was when dinosaurs existed a millions of years ago. The water keeps moving in a cycle; it evaporates from rivers, lakes and ocean. The vapour from evaporation and condensation forms the clouds in the sky and then returns to the earth as rain, snow, sleet or hail. The Earth’s water supply is made up of 97% of oceans, 2% of icecaps/glaciers, 1% fresh ground water.• Water is the only thing that can be either a gas/liquid/solid. In twenty-minutes a thunderstorm can send down over one hundred twenty-five million gallons of water! The best part about water cycle is that you can start a diagram/ anything at any stage because it is always circling around…!
During part of the water cycle, the sun heatsup liquid water and changes it to a gas by theprocess of evaporation. Water thatevaporates from Earth’s oceans, lakes, rivers,and moist soil rises up into the atmosphere.
The process of evaporation from plants iscalled transpiration. (In other words, it’s likeplants sweating.)
As water (in the form of gas) rises higher in theatmosphere, it starts to cool and become a liquidagain. This process is called condensation.When a large amount of water vapor condenses, itresults in the formation of clouds.
When the water in the clouds gets tooheavy, the water falls back to the earth.This is called precipitation.
When rain falls on the land, some of the water isabsorbed into the ground forming pockets of watercalled groundwater. Most groundwater eventuallyreturns to the ocean. Other precipitation runsdirectly into streams or rivers. Water that collectsin rivers, streams, and oceans is called runoff.