The Water Cycle

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The water cycle illustrates evaporation and condensation as it occurs around the world to recycle the planet's water. Learn about the the earth's water usage with important facts from a science teacher in this free video on fundamental physics.

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Video Transcript

Now, to explain the states of matter one can bring up the water cycle. In the water cycle, there are the two states of matter represented. You can see evaporation and condensation. Now, remember water never disappears this includes any type of liquid form, your sweat, your spit, it just merely changes a states of matter how it looks. Again, evaporation to condensation it literally goes up in the clouds. Now, the water cycle is our planets way of reusing water. Did you know that over 75% of our plant is covered in water? Hence, our planet earns the nick name the "blue planet". Now, what happens when the sun beats down on water? Well, the water cycle begins. First, again evaporation, this is where the liquid turns into gas. Now, we have condensations, so it goes up water form and this is where the gas turns into liquid. It's moved by the clouds, and then it comes down in the form of precipitation, where it returns to the earth in the form of rain, snow, hail and sleet. Now, bear in mind, our oceans are the biggest area where water evaporates, but salt does not evaporate, its stays on the earth and just the fresh water comes up. So this cycle constantly repeats itself. I mean you might want to think twice about singing in the rain. And maybe you can be swallowing spit from a dinosaur from a million years ago, think about it.

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