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1.4光的传播方向会发生改变吗
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1.光在传播过程中，遇到透明物体时，能透过这些透明物体继续前进,比如玻璃；遇到半透明物体时，能部分透过这些半透明的物体,比如纸巾；遇到不透明物体时，光不能透过,因为光的去路被不透明的物体阻挡了,不能继续传播。
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2.实验一：将一束激光笔射出的光透过空气射进水中
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探究的问题：将激光笔射出的光透过空气射进这一杯水中，光的传播路线会发生变化吗？
(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"
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实验预测：
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预测1：光的传播路线会发生变化。
(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"
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预测2：光的传播路线不会发生变化。
(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"
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实验材料：一杯水、实验记录表、激光笔等等。
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实验方法：
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关好门窗，保持实验室的黑暗，让激光成为实验室的唯一光源。
将一束激光笔射出的光透过空气射进水中，观察光线的传播路线是否会发生变化。如果发生变化，又会发生怎样的变化。
实验注意点：
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本次实验要保持实验室的黑暗，让激光成为实验室的唯一光源，才能够更好的体现实验效果。
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不要用激光笔发出的光照射眼睛。
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实验现象：
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激光笔射出的光透过空气射进水中，其传播路线会发生了变化。
(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"
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实验结论：
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光透过空气斜射进水中，其传播路线会发生变化。
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