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Sunday, July 29, 2007, 9:36 AM
History answers pg 87
hydraulic- Hydraulic engineering is the knowledge of controlling waterengineering supply through the building of dams, dykes, canals and reservoirs . It is still used for the gathering, storing and re-directing ofwater supply. seismograph • The seismograph was invented by Zhang Heng in 132 CE. Itwas used to show when an earthquake had occurred andfrom which direction. This allowed help to be sent quicklyto disaster areas.• It is now used for giving advance warning of earthquakes andfor measuring the intensity of earthquakes. compass • The compass first appeared during the Han dynasty. It wasused for town planning and sea voyages.• It is still used by ships and aeroplanes for navigation and bysoldiers and hikers for orientation.porcelain • The people of ancient. China produced fine works of pottery.Their artistic achievements are still appreciated bypeople today. printing • Block printing was invented around 700 CE, during the Tangdynasty. The Diamond Sutra, the oldest printed text in theworld, was made using block printing. Later, movable printwas invented by Bi Sheng.It has allowed for quick and economical transfer of informationas well as enabled the spread of learning.(Accept any reasQnable explanation.) |