82 How Things Are Different-Mid

How Things Are Different Written by Katherine Follett

《世界有何不同》凯瑟琳·福莱特著

Why are different things made of different stuff? Would you want to wear a wooden shirt? Would a paper hammer pound a metal nail into wood?

为什么不同的东西是由不同的物质构成的? 你想穿木制衬衫吗? 纸锤能把金属钉子敲成木头吗?

The stuff everything is made up of is called matter. Different kinds of matter act in different ways. We use different matter to make different things.

构成万物的物质叫做物质。 不同种类的物质有不同的作用方式。 我们用不同的物质制造不同的东西。

There are three main kinds of matter. One kind is a solid. A solid has its own shape. Wood and metal are solids.

物质主要有三种。 一种是固体。固体有自己的形状。 木头和金属都是固体。

Another kind of matter is a liquid. A liquid takes the shape of what is holding it. Water is a liquid. What are some other liquids? Do You Know? Many things can change from a solid to a liquid. Ice can melt into water. What other things can melt?

另一种物质是液体。 液体的形状取决于液体的形状。 水是液体。还有其他液体吗? 你知道吗?很多东西都可以从固体变成液体。 冰能融化成水。还有什么东西可以融化?

The third kind of matter is gas. Gas has no shape. It can change sizes. You cannot see most gases. Air is a gas.

第三种物质是气体。 气体没有形状。它可以改变大小。 你看不到大多数气体。 空气是气体。