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Review of Literature:  People always get disappointed when they wash and dry clothing and then they find out it shrunk. The reason this happens can depend on the type of fabric.

 For example natural fabrics such as cotton may shrink because of relaxation shrinkage. What happens is when clothes are made tension is applied to the cotton yarns and fabrics. The tension can be released when under heat causing the fabric to shrink back to its original size. This why most cotton fabrics shrink when they are first being washed.(Berner, David W)

 Also, linen and silk are in this category of natural fabrics. Natural fibers are made from only plants and animals and are made from renewable sources which are very good for the environment.(Stromness, Cara.)

 On the other hand, fabrics such as nylon, acetate, polyester, and acrylic are synthetic fabrics. Synthetic fibers are man-made substances made from chemical process in factories. The most common synthetic fiber made is polyester. Even though natural fabrics are better for the environment because they are reusable, synthetic fabrics last longer.(Stromness,Cara)

 They reason the fabrics may shrink or may get bigger is all part of if it’s hot or cold. Everything's made out of atoms so at any temperature the atoms are moving. So when they are heated the atoms start moving around faster and faster this means the atoms will take up more space which causes the object to expand. If the temperature is cooler the atoms while move slower they will take up less place and shrink.

**Works Cited**

Berner, David W. "What Makes Clothes Shrink in the Washer & Dryer? | EHow." // EHow //. Demand Media, 19 Apr. 2010. Web. 17 Oct. 2013 I know this is a valid source because
 * the site says that they have people who are specialized in that specific field answer the questions.

Fernandez, Sonia. "Natural Vs. Synthetic Clothing | EHow." // EHow //. Demand Media, 02 July 2010. Web. 17 Oct. 2013 I know this is a valid source because
 * the site says that they have people who are specialized in that specific fiels to answer the questions.

Moyer, Richard. //McGraw-Hill Science //. New York: McGraw-Hill School Division, 2000. Print. its a good source because u can learn about different kind of things that involve science

Penn-Chiu, Jennifer. "Which Fabrics Shrink the Most in the Wash? Does Washing or Drying Cause This?" //Education.com //. Education.com, n.d. Web. 26 Sept. 2013. <[]>.

It is a valid source because
 * They have a lot of important sponsors that say they trust this site.
 * Also before you can publish something on the site they have to review it.

Petty, Marsanne. "What Fabrics Shrink in the Dryer? | EHow." // EHow //. Demand Media, 21 Nov. 2010. Web. 17 Oct. 2013. I know this is a valid source because
 * the site says that they have people who are specialized in that specific field answer the questions.

Stromness, Cara. "The Difference Between Natural and Synthetic Fabrics." // Suite101.com //. N.p., n.d. Web. 17 Oct. 2013 it is a valid source because
 * they have a lot of rules for the member on the site and only let them post specific things

"Why Does Lump of Cotton Wool Shrink in Water?" //WikiAnswers //. Answers, n.d. Web. 27 Sept. 2013. <[]>. I know this valid is a site because
 * the site pays people who are specialists in the specific area to answer the questions