10 Physical Science Sound

WHAT IS SOUND? Hello there! I'm SOUND. I'm a form of energy!

什么是声音？你好!我的声音。 我是一种能量！

Sound comes from objects that vibrate. When something vibrates, it moves back and forth. SOUNDS CAN BE LOUD! Or sounds can be soft... But there is more to me than meets the ear!

声音来自振动的物体。 当某物振动时，它来回移动。 声音可能很吵！或者声音很柔和…… 但我还有很多事情要做！

WHAT MAKES SOUND? When an object vibrates... ...the air around the object vibrates, too! These vibrations in the air are called sound waves.

什么发出声音？当一个物体振动时…… …物体周围的空气也在振动！这些在空气中的振动被称为声波。

Sound waves travel in all directions from a vibrating object. They carry energy away from the object. Sound needs a material to travel through. The air may look like nothing, but it's actually made up of tiny pieces called air particles. These tiny particles vibrate with my energy! The vibrations travel through the air particles until they reach your ears!

声波从振动的物体向四面八方传播。 它们从物体带走能量。 声音需要某种物质才能传播。 空气可能看起来什么都没有，但它实际上是由称为空气颗粒的微小碎片组成的。 这些微小的粒子随着我的能量振动！振动通过空气粒子传播，直到它们到达你的耳朵！

HOW DO WE HEAR SOUNDS? What happens once a sound reaches your ears? Let's take a look inside! Sound waves enter your ears and hit the eardrum. The eardrum is a piece of soft, thin tissue inside the ear. It stretches across the tube inside your ear.

我们是如何听到声音的？当声音传到你的耳朵里会发生什么？ 让我们看看里面！声波进入你的耳朵并撞击鼓膜。 鼓膜是耳朵里的一块柔软而薄的组织。 它穿过你耳朵里的管子。