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这个世界上充斥着各种声音,有悦耳的鸟鸣声、动听的音乐声,还有烦人的喇叭声。大家知道声音是如何传到我们耳朵里的吗?声音是如何传播的声音是一种振动或者波。它通过物质(固体、液体或气体)传播,且能够被听见。振动是由某些机械运动引起的,例如有人拔吉他弦或敲门。机械运动发生后,其周围的分子会产生振动。当这些分子振动时,它们又引发周围的分子振动。振动将从一个分子扩散到另一个分子,使声音进行传播。
The world is full of sounds, sweet birdsong, nice music and annoying trumpets. Everyone knows how the sound is transmitted to our ears? The voice is how to spread the sound is a vibration or wave. It spreads through matter (solid, liquid, or gas) and can be heard. Vibration is caused by some mechanical movement, such as pulling a guitar string or knocking. Mechanical movement occurs, the molecules around it will produce vibration. When these molecules vibrate, they in turn trigger the surrounding molecular vibrations. Vibrations will spread from one molecule to another, allowing the sound to spread.