(呼和浩特专用)2019中考物理高分一轮第24单元能量的转化和守恒能源与可持续发展课件.pptx

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第 24 课时 能量的转化和守恒 能源与可持续发展,考点一 能量的转化和守恒,考点二 能源的分类,考点三 能源的利用,1.核能,2.太阳能,聚变,探究一 能量的转化和守恒,例1 下列关于能源的说法,正确的是 ( ) A.风能是不可再生能源 B.太阳能、水能是二次能源 C.人类已建成的核电站是利用核聚变发电的 D.化石能源的大量使用造成了酸雨、雾霾等环境问题,D,【变式】 2017龙东 下列关于能量转化、转移现象的说法中,正确的是 ( ) A.蓄电池充电时,化学能转化为电能 B.暖瓶塞跳起时,机械能转化为内能 C.用热水袋取暖时,内能发生了转移 D.电动机工作时,机械能转化为电能,C,探究二 能源与可持续发展,例2 2017成都 成都正全面加强人居环境建设,让市民“望得见山,看得见水,记得住乡愁”。要实现这样的愿望,节能减排,使用新型能源势在必行,下列说法不正确的是 ( ) A.生物能、地热能、海洋能、太阳能都是新能源 B.氢燃料发动机能够将化学能全部转化为机械能 C.能源的大量消耗使人类面临严重的能源危机 D.节能问题的核心是提高能量利用时的转化效率,B,【变式】 2018德州 图24-1是德州市安装的一种太阳能路灯,太阳能电池将太阳能转化为 能提供给路灯,太阳能属于 (选填“可再生”或“不可再生”)能源。 图24-1,电,可再生,

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