tag:blogger.com,1999:blog-46103012176914940052011-11-18T18:07:30.335-08:00ranihttp://www.blogger.com/profile/12235690342279417299noreply@blogger.comBlogger11100tag:blogger.com,1999:blog-4610301217691494005.post-40970844822710218142011-10-01T09:05:00.001-07:002011-10-01T09:05:36.106-07:00<div id="article-content" style="text-align: justify;"> Every year students all over the country are charged with creating exhibits for local science fairs. For most, the biggest chore is finding something that will make a good project. They're looking for a way to positively showcase their knowledge without having to become overly-involved in the intricacies and expenses of science. Some topics have been done to death, so finding a unique idea will also get you points. But what might that unique idea be? How about creating a working model of a water purification system? It's very effective, simple and easy to create, and you won't need a lot of expensive supplies.<br />The only things you're going to need in order to build your water purification device is a sturdy foot-high footstool or cardboard box, 2 large mixing bowls, a 4' length of white yarn, some muddy water, and some posterboard and art supplies. You can make muddy water by adding dirt to your own tap water. You may have to try varying concentrations of dirt to water until you get a solution you're happy with.<br />Start by sitting a bowl of muddy water on top of the stool. The other bowl goes on the floor nearby. One bowl has to be higher than the other in order for this experiment to work. Immerse one end of the yarn in the muddy water and run the other down to the clean bowl. As time goes by, the water is going to travel down the yarn to the bowl on the floor while leaving the dirt behind.<br />This is a very simple demonstration of water filtration and absorption, but it does work. The water is absorbed by the yarn, and the pull of gravity takes it down into the second bowl. For a control to your experiment, try setting up the same operation but with the bowls at the same height. You will be able to demonstrate that without gravity, the water will still be absorbed into the yarn, but it won't make it into the second bowl. Instead, it will drip from the yarn somewhere in transit.<br />To complete your science project, you'll want to make posters with a few comparison graphs and examples. For example, record how long it takes various amounts of water to travel through the yarn into the bowl. Compare the amount of dirt you put into the water with the amount of dirt that's left after all of the water has been filtered. Compare the color of the yarn before you use it to the yarn after the water has gone through it to see if it has changed. Use bright colors and a ruler when you make your posters, and you'll have a 5-star production ready to wow onlookers.<br /> </div><div> </div><div id="article-resource" style="text-align: justify;"> Looking for more information on? <a href="http://www.separmaticsystems.com/emergency-response-trailers.html" target="_new">emergency mobile water</a>? Separmatic Systems can provide you with all your water purification needs including diatomaceous earth filters and <a href="http://www.separmaticsystems.com/emergency-response-trailers.html" target="_new">mobile water trailers</a>.<br /> </div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/4610301217691494005-4097084482271021814?l=deathandconscience.blogspot.com' alt='' /></div>ranihttp://www.blogger.com/profile/12235690342279417299noreply@blogger.com0