reading可用.ppt
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1、Zheng HeMarco PoloJames CookLook at these famous people. Are they navigators or explorers?compassAstrolabe(星盘星盘)Sextant(六分仪六分仪)sea/nautical chartearly navigational instrumentsRead about what navigation was like before modern instruments were used.Read the text and answer the questions in the referen
2、ce book Using naturelTo keep alongside the coastlinelUsing celestial bodiesl Using wildlifel Using the weatherl Using the seaPage 1Using celestial bodiesto plot the positionsto work out the latitudea special cloud formation indicates there is land close byUsing wildlifeIf seaweed was fresh and smell
3、ed strongly, the ship was close to land.Sea birds could be used to show the way to land when it was nowhere to be seen.Using the weatherTo help identify the position of a stream or river whenTo direct their sailing. Use the information to analyze the navigational skills and write the answers in your
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