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人教版 (新课标)必修3&4Unit 4 Astronomy: the science of the stars课前预习ppt课件
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这是一份人教版 (新课标)必修3&4Unit 4 Astronomy: the science of the stars课前预习ppt课件，共13页。
学 习 目 标 展 示
背 景 知 识 链 接
Astrnmy is the ldest science knwn t man.Thusands f years ag man lked at the stars and wndered abut the heavens.But man was limited by the six planets that he culd see with his eyes alne.The Greeks studied astrnmy ver 2,000 years ag.They culd see the size，clur，and brightness f a star.They culd see its place in the sky.They watched the stars mve as the seasns changed.But the Greeks had n tls t help themselves study the heavens.Each new tl added t the field f astrnmy helped man reach ut int space.Until there were telescpes①，man knew a little abut the mn.He did nt knw that the planet called Saturn② had rings arund it.His sight was s limited that he culd nt see all the planets.
In the early 1700s，peple thught there were nly six planets.Befre the spectrscpe③，man did nt knw what kind f gases is arund the sun r ther stars.Withut the raditelescpe④，we did nt knw that radi nises cme frm far in space.Tday，astrnmy is a grwing science.We have learned mre in the last fifty years than in the whle histry f astrnmy.
人类的视野非常有限，看不到所有的行星。在18世纪早期，人们认为只有六颗行星。在分光镜出现之前，人类不知道太阳或其他星球周围有什么样的气体。没有射电望远镜，我们不知道射频噪音来自遥远的太空。如今，天文学是一门日益发展的科学。我们在过去的50年里所了解的要比在整个天文学史上所了解的还要多。
Ntes①telescpe n．望远镜 ②Saturn n．土星 ③spectrscpe n．分光镜 ④raditelescpe n．射电望远镜TaskAccrding t the passage，what helped human beings bserve the mn?The appearance f the telescpes
学 习 目 标 展 示
背 景 知 识 链 接
Astrnmy is the ldest science knwn t man.Thusands f years ag man lked at the stars and wndered abut the heavens.But man was limited by the six planets that he culd see with his eyes alne.The Greeks studied astrnmy ver 2,000 years ag.They culd see the size，clur，and brightness f a star.They culd see its place in the sky.They watched the stars mve as the seasns changed.But the Greeks had n tls t help themselves study the heavens.Each new tl added t the field f astrnmy helped man reach ut int space.Until there were telescpes①，man knew a little abut the mn.He did nt knw that the planet called Saturn② had rings arund it.His sight was s limited that he culd nt see all the planets.
In the early 1700s，peple thught there were nly six planets.Befre the spectrscpe③，man did nt knw what kind f gases is arund the sun r ther stars.Withut the raditelescpe④，we did nt knw that radi nises cme frm far in space.Tday，astrnmy is a grwing science.We have learned mre in the last fifty years than in the whle histry f astrnmy.
人类的视野非常有限，看不到所有的行星。在18世纪早期，人们认为只有六颗行星。在分光镜出现之前，人类不知道太阳或其他星球周围有什么样的气体。没有射电望远镜，我们不知道射频噪音来自遥远的太空。如今，天文学是一门日益发展的科学。我们在过去的50年里所了解的要比在整个天文学史上所了解的还要多。
Ntes①telescpe n．望远镜 ②Saturn n．土星 ③spectrscpe n．分光镜 ④raditelescpe n．射电望远镜TaskAccrding t the passage，what helped human beings bserve the mn?The appearance f the telescpes
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