資源簡介

1.4光的傳播方向會發生改變嗎
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1.光在傳播過程中，遇到透明物體時，能透過這些透明物體繼續前進,比如玻璃；遇到半透明物體時，能部分透過這些半透明的物體,比如紙巾；遇到不透明物體時，光不能透過,因為光的去路被不透明的物體阻擋了,不能繼續傳播。
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2.實驗一：將一束激光筆射出的光透過空氣射進水中
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探究的問題：將激光筆射出的光透過空氣射進這一杯水中，光的傳播路線會發生變化嗎？
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實驗預測：
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預測1：光的傳播路線會發生變化。
(?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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預測2：光的傳播路線不會發生變化。
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實驗材料：一杯水、實驗記錄表、激光筆等等。
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實驗方法：
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關好門窗，保持實驗室的黑暗，讓激光成為實驗室的唯一光源。
將一束激光筆射出的光透過空氣射進水中，觀察光線的傳播路線是否會發生變化。如果發生變化，又會發生怎樣的變化。
實驗注意點：
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本次實驗要保持實驗室的黑暗，讓激光成為實驗室的唯一光源，才能夠更好的體現實驗效果。
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不要用激光筆發出的光照射眼睛。
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實驗現象：
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激光筆射出的光透過空氣射進水中，其傳播路線會發生了變化。
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實驗結論：
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光透過空氣斜射進水中，其傳播路線會發生變化。
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