Science+fair+lit+review+SP

=Science literature review essay=

People get mad when their either out in the hot sun or in the cold and strech a rubber band and SNAP it breaks!! The behavior molicules under heat would be that the rubber band becomes more flexible and wider. However, because of the arrangement of the particles, the band becomes smaller. The opposite is also true. If you cool down a rubber band, it actually becomes stretchier and expands slightly. This is because the molecules actually become more organized into a more efficient stretching shape. Because the molecules are more rigid and structured, they are actually stronger.( Turner, Grahame.) A rubber band is a chemical a wierd chemical, arranged in a different way. what is. it?When you consider how many different things rubber bands can do, it is surprising to learn that rubber contains just two basic elements: hydrogen and carbon. A single rubber band contains many millions of atoms joined together in long stretchy strings. But all of the atoms are either carbon or hydrogen.( Frye, Matthew)

Rubber bands are very very very very different because they are made from loosely-packed of atoms. These long molecules behave in a special way because of Entropy. Entropy is a way of measuring the amount of out of order in a system. If all the chains are neatly lined up in rows the entropy is very low. If they are all tangled up in a mess entropy is high. Now here's an experiment you can do in your head. Imagine you have lots of long pieces of string, screwed up into a ball. They're not rolled up neatly, or coiled just screwed up like scribbles on paper. It's quite a mess, and the entropy is quite high. Now imagine that you grab hold of the two sides of this mess, and start to pull them apart. it will cojme apart and look neater Even though they'll still be tangled up, you'll see that in the middle they all line up in straight lines pointing from your left hand to your right hand. You've created order out of a mess, and you've reduced the entropy in the system. This is exactly what happens inside a rubber band when you stretch it. The messy tangles line up a bit, and the entropy goes down. Now, in physics, when the entropy goes down it and when the entropy goes up the system will take in heat from around it. ( White, Laurence B., Jr)

= **W** **ORKS CITED **=

Frye, Matthew. "Re: How Does Temperature Affect Elasticity of a Rubber Band?" //How Does Temperature Affect Elasticity of a Rubber Band?// N.p., n.d. Web. 27 Sept. 2013. []


 * this is a good source because Matthew Frye knows what he is talking about

"How Does Temperature Affect Elasticity of a Rubber Band?" //How Does Temperature Affect Elasticity of a Rubber Band // . N.p., n.d. Web. 27 Sept. 2013. []


 * This is a good website because ask.com is run by professionals

<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">"How Rubber Works." //<span style="font-family: 'Times New Roman',Times,serif; font-size: 16px;">HowStuffWorks // <span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">. N.p., n.d. Web. 30 Sept. 2013. []


 * How stuff works is a good source because it is a company run by profesionals

<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">Turner, Grahame. "How Temperature Affects the Stretch of a Rubber Band | EHow." //<span style="font-family: 'Times New Roman',Times,serif; font-size: 16px;">EHow // <span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">. Demand Media, 23 May 2010. Web. 27 Sept. 2013. []


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 16px;">This is a good source because it is written by professionals

<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">White, Laurence B., Jr. "Investigating Science with Rubber Bands." N.p., n.d. Web. []


 * Besides being a master builder of paper architecture, Laurence B. White, Jr. is also a member of the Society of American Magicians. Both activities may seem unrelated, but they really reflect different facets of his principle interest: the dramatic presentation of scientific ideas. As Assistant Director of the Needham (Massachusetts) Elementary Science Center and as a popular television teacher, he has had ample opportunities to use his unique talents