八年级物理上册3.1《光世界巡行》第二课时同步练习(新版)粤教沪版.doc

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1光世界巡行第二课时同步练习知识提要1色散:一束太阳光通过玻璃三棱镜后,被分解成七种色光的现象,叫做色散。2色光的混合: 红、绿、蓝三种色光叫做色光的三基色。分级导练一、填空题1太阳光通过三棱镜后,被分解成各种颜色的光,如果用一个白屏承接,颜色依次是红、_、黄、_、蓝、_、紫。2色光的三基色分别是_、_、_,等比例混合后为_色光; 3我们将白光通过_,会看到白光并不是单纯的光,而是由多种色光混合而成的。这种现象是光的_。二、选择题4下列现象中,不能用光的直线传播规律解释的是( )A日食B射击时的瞄准要领是“三点一线“C雨后天空出现彩虹D人不能看见不透明物体后面的东西5下列物理事实中,属于光的色散的是( )A霓虹灯的灯光 B彩色电视机的画面C色彩丰富的水彩画 D雨后天空出现的彩虹2参考答案分级导练一填空题1橙、绿、靛;2红、绿、蓝、白3三棱镜、色散;二选择题4C5D

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