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Article: What is glass made of?(Science Letters? What makes popcorn pop?)(Brief article)
- Article from:
- Highlights for Children
- Article date:
- October 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 Highlights for Children, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Emily Snyder, Age 9
Georgia
[ILLUSTRATION OMITTED]
Glass is made from a mixture of sand and other materials. Just plain sand can be made into glass, but it must be heated to about 3,000 degrees Fahrenheit. It's both difficult and expensive to bring a substance to such high heat. It's also possible to ...
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Article: Where garbage goes.(Science Letters)(Brief Article)
Highlights for Children;
October 1, 2003 ;
409 words
... ... scraps--is decomposed by bacteria in the soil. It eventually becomes gases like carbon dioxide. Garbage includes a lot of glass, plastic, and metal containers. These are a serious problem because they last for years and do not decompose. People try ...
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