How Strong Is It ? (A Mighty Book All About Strength)
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This fascinating book is all about strength and power. It starts with the spider web. If a spider could make a web where each silk strand were as thick as a pencil, its web could stop a Boeing 747 in midflight. There is no other substance that even comes close to this stopping power. Ounce for ounce, spider silk is stronger than nylon and stronger than steel. Not even Kevlar, the world's strongest synthetic fiber - used in bulletproof vests - can match the strengh of a web mean to catch flies. The book goes on to compare over 20 other natural, and man-made phenomona in this world (and out of it). Read it! You'll be amazed.
Format:Paperback
ISBN:0545054907
ISBN13:9780545054904
Release Date:January 2008
Publisher:SCHOLASTIC
Weight:1.35 lbs.
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