Daniel's+Water+Cycle+Presentation_11


 * The Water Cycle**

by:Daniel Wyatt Ogren = = Water dosent just come out of your faucet or your fridge or just randomly fall from the sky from some anonymous source. Water has a story, just like every one of us, and that story changes the way of life on the earth. Water is more than One hundred fifty thousand years old! it was around at the time a Tyrannosouras rex stepped in a large puddle full of dirt, and when a knight reeled up water from his well and when you ran the faucet to get your water on a hot summer day. Did you know that the water you drink may have come from deep underground? The story of how your water gets here is called The Water Cycle,One of the most important cycles in the world. The water cycle goes through many steps and stages until it finally reaches its final step then the cycle repeats.

The Water Cycle Has many steps and stages that it must go through to keep the cycle repeat. One step in the water cycle is **Evaporaton.** Evaporation is when the sun's rays heat up the water below turning it from a liquid to a gas. The particles that heat up in the water expand, speed up and rise. Same as if you were boiling water in a pot on a stove, the water at the bottom would heat up because it is the closest to the heat. The particles at the bottom expand and rise and speed up just like in the water cycle. That is called **Convection currents.** The cycle continues in the pot until the heat source is removed. There is an aid in Evaporation and it is called **Transpiration.** It's pretty much just plants sweating. Ha! You didn't know that did you! Transpiration is when plants lose water from their leaves and that water evaporates (kind of like sweating) in to the air and its called **Evapotranspiration**. Ice can be a part of the water cycle too, When ice Evaporates before melting it is called **Sublimation**. Strange how it evaporates BEFORE it melts. That can only happen when the temperature is really cold, and the air is very dry.

Another step is named **Condensation.** When the particles from the ocean (or rivers or lakes) rise high in the sky, they cool down and condense, forming what we see almost everyday in the sky: clouds. Clouds form because the particles that are turned into the gas form return to their liquid state. In Convection, Condensation occurs when the water gets to the top of the pot where it is then the water fogs up the top making clouds. You can make your OWN clouds just grab a cup of hot water (and i mean HOT HOT HOT ) then put a piece of tinfoil on top of the cup and make sure that it is wrapped. After you have wrapped the cup's top, Put seven or eight ice cubes on top of the cup. You should she fog on the sides of the cup, and guess what? you just made clouds!

Imagine being stuck up in a cloud. I mean you would want to leave it right? That's exactly what happens in **Precipitation.** Precipitation is when the clouds get heavy because they are full of water it gets heavy for the clouds so they let their water fall, forming a shape either of rain, hail, sleet or snow. Also, Convection ties itself in with precipitation too. After the water on top cools off,the Clouds get heavy from all the particles and they can't hold them any longer so the water particles floats all the way down. And they heat up once again then it does the same thing that it did up in Evaporation.

So lets say you are the particles, you just went for a freefall and you landed in a river and that river is carrying you toward the ocean. That process is named **Runoff.** Runoff is the Transfer between a river and the ocean. After the water fell as precipitation,it flows into a river and that river carries the particles all the way to the ocean. After the water returns to the ocean.

Now the last and final step of this aquatic cycle is **Collection.** Collection is the process of water Flowing into the ocean again,their home, It's kind of like you collecting comic books from a store and bringing them home. The comics are Particles, you are the river and your house is the ocean. When the Particles return to the Ocean or another large body of water. But sooner or later, That water will be Evaporated again, And Condensed again,And Precipitated again, And collected again, And it will be repeating for years and years. Now, what is behind the water cycle? What is driving the cycle? There must be something driving it!

Now there must be something driving the water cycle right? There are two (or more) sources driving the Water Cycle: The suns heat and Gravity. The sun relates to the movement of the Water Cycle in different ways. The heat from the sun causes Evaporation because of its rays. Gravity causes Precicpitation,sucking the water back to the ground. Condensation is gravity too, Gravity has oxygen in it, oxygen is air. Without air it is freezing. So that is how the Particles condense into clouds.

The water cycle can be very important to the Human Race. It supports all living organisms and helps your plants and gives us water to drink,bathe in, and even live! The water cycle changes us by raining,flooding and snowing. We impact the water cycle by using the water for different things. Like using it to create gas and other things that we use. If the Water cycle stopped, the water would stop evaporating,condensing and precipitating. There would be no more drinking water or no more plants.