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ASDB,j

zs
by

David Key

on 31 January 2013

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Transcript of ASDB,j

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Images from Shutterstock.com Gunpowder Gunpowder is made from sulfur,charcoal,and saltpeter.Cunpowder is used in fire lances,fireworks,stone cannons,and rockets.Gunpowder was first written by a man named Wei Boyang in 142 AD in the Han Dynasty.The Chinese tried to keep their discovery a secret but in 1100s their secret got out.Gunpowder wasn't really used until the law in 904 AD. Hemp Cloth Paper was invented in China in 105 AD under the Han Dynasty.Papyrus were traded for paper.Ts'ai Lun created paper by mixing finley chopped mulberry bark and hemp cloth with water.By 400 AD people in India were using paper but not until the 500s people started to use it around the world.In 1338 French monks began to make their own paper.Paper is now used around the world. Paper Silk:To make silk you have to take zillions of butterfly cocoons and take them apart and weave them together to make a stronger item known as silk. Silk is used for clothes,bookmarks,and shoes.Silk was very important to trade and very expensive.Silk makes you cooler in the summer than wool and linen.Silkworms only eat fresh mulberry trees which only grew in China. Hemp started growing wildly in East Asia,Central Asia,and India.By 50,000 people in China already started using hemp for strings for nets.By 8000 BC farmers were making hemp cloth.People started making their cloths out of hemp and silk.Soldiers used hemp to make bow strings. http://www.youtube.com/watch?v=uXNFq1bUoT8&feature=player_detailpage Resources www.historyforkids.org/learn/china/ www.google.com
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