(达州专版)2019中考物理第八单元电和磁第27课时简单的磁现象信息的传递复习课件.ppt

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第八单元 电和磁,学生用书P116,第27课时 简单的磁现象 信息的传递,铁、钴、镍,北,南,排斥,吸引,磁力,北极,强弱,3108,变化,信息,能量,3,全反射,学生用书P117,A,A,A,D,A,2,4,从 N 极,出发,回到 S 极,小磁针,将小磁针置于异名磁极,观察小磁针稳定后 N 极的指向,周围不同处,【正解】 略,学生用书P118,D,A,B,B,C,D,电磁波,18,地磁场,3108,S,增强,电磁波,电,120,10.8,D,A,电磁波,化学,方向,C,

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