Tuesday, November 12, 2013

Expository Essay


The Water Cycle

Jacob McNeely
Earth Science 4th
11/9/13

There are many different parts of the water cycle, the three main phases would be: Evaporation, condensation, and precipitation. Each phase of the cycle is completely different, each dealing with different things that are important to our planet.
                    
             The first part of the water cycle is evaporation, in this phase of the water cycle, water evaporates. Whenever water evaporates, it is due to the water molecules gain heat and eventually gain kinetic energy and is released into the atmosphere as water vapor. Heat energy has to be applied to water molecules in order for the water to turn into a vapor, causing the molecules to accelerate towards each other and ultimately collide together. Evapotranspiration is the process of water being transported into the atmosphere from surfaces like soil and plant life.

                        In the condensation phase of the water cycle, water forms clouds and fog as well as other weather formations. Ever wondered how a cloud has formed? Here’s how: clouds form whenever rising air cools and causes the water vapor that is in the atmosphere cools and begins to basically clump together. When there is a thick cloud of tiny water particles near the Earth’s surface that obscures visibility, it is known as fog. Clouds have these tiny little particles inside of them known as condensation nuclei and that is an aerosol that acts as the initial sites for condensation of water vapor into cloud droplets or cloud ice particles.
                Precipitation is the last phase I’m going to talk about, during precipitation water molecules fall to the earth in many different forms. Precipitation is any form of liquid or solid particles that fall from the atmosphere and reach the Earth’s surface. Examples including rain, sleet, snow, hail, etc. Water isn’t stored only in just oceans or rivers; there are other forms of water storage we don’t exactly think about. Water storage is locations where water is stored in the ground or other different formations such as ice caps or other similar surfaces. After some form of precipitation hits the ground most people just assume that the water simply disappears, however, this is in correct. After precipitation hits the ground, it either soaks itself into the ground, or flows through rocks back into the nearest body of water.
                   
     All in all, that’s the water cycle put as simple as was possible. If you don’t understand how evaporation, condensation, and precipitation work after you’ve read this, too bad, I’m not the person who came up with these theories.













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