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十月是秋高气爽的旅游旺季,我们一家来到北京著名景点天坛参观,里面的回音壁引起了我的极大兴趣。回音壁是皇穹宇的围墙,如果一个人站在东配殿的墙下,面朝北墙轻声说话,而另一个人站在西配殿的墙下,面朝北墙轻声说话,两个人把耳朵靠近墙,虽然远隔40多米,但依然可以清楚地听见对方的声音。妈妈告诉我,这就是声音的反射现象,即声音遇到障碍物可以被弹回来。【提出问题】声音碰到障碍物
October is the autumn tourist season, our family came to visit the famous Temple of Heaven in Beijing, which echoed the wall attracted my great interest. The whispering gallery is the wall of the imperial dome. If one person stands under the wall of the east wing, speaking softly toward the north wall, while the other stands under the wall of the west wing, speaking softly toward the north wall, both ears Close to the wall, although more than 40 meters apart, but still clearly hear each other’s voice. Mom told me that this is the reflection of sound, that the sound encountered obstacles can be bounced back. [Ask a question] The sound hits the obstacle