Essay by Joe SchmoeHigh School, 10th gradeA+, November 1996

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The experimenter is testing on denim, cotton T-shirt material, wool fabric,

thermal underwear, polyester fabric, and a Ziplock bag with no insulator. From

research the experimenter learned that wool is a fine soft wavy hair that forms all

or part of the protective coat of a sheep. Since ancient times it was harvested to

provide clothing and is an important part in textile trade because of its insulation.

Woolen fabric is when the woolen system uses short or mixed long and short

fiber where no combing is done. It has a rough appearance and is most suitable

for blankets, overcoats, and tweeds. Denim which the experimenter is also

testing is the material used to make blue jeans and is currently one of the world's

most popular fabrics. It is fairly heavy and is made with a blue cotton warp and a

white cotton filling (Groilers, 1996). The thermal underwear is duofold, with an

outer layer made of 65% cotton, 25% wool, and 10% nylon, and an inner layer

made of 100% cotton.

It's the winter again and the weather is becoming colder. Each morning

many people wonder what to wear to stay as warm as possible, but they aren't

sure which material will keep them warmest. The experiment was chosen to see

which clothing insulator retains the most heat. 'Insulation is material that

protects against heat, cold, electricity, or sound.' (Science Encyclopedia, 1984).

In this case the insulation will be protecting against a cold temperature.

The hypothesis is if denim, cotton T-shirt material, wool fabric, polyester

fabric, thermal underwear, and a Ziplock bag with out insulating material are

tested to see which one retains the most heat, then wool fabric will retain the

most heat because it holds an important place in today's textile trade because of

its good...