第5课

2021-6-11 15:50| 发布者: admin| 查看: 104| 评论: 0

摘要: .

Unit 2第二单元

Ubiquitous Energy无处不在的能量

Ships move, airplanes fly, cars run, bullets fly, lights shine, boilers heat... any object needs energy to work and releases energy at the same time.轮船行驶、飞机翱翔、汽车奔驰、子弹飞行、电灯发光、锅炉供热…任何物体工作时都需要能量,同时释放能量。

Energy is everywhere, all the time.能量无处不在,无时不有。

In nature, energy exists in many forms, such as mechanical energy, electric energy, light energy, heat energy, sound energy, magnetic energy, chemical energy and so on.在自然界中,能量存在的形式很多,如机械能、电能、光能、热能、声能、磁能、化学能等。

But where does the energy come from and where does it go?然而这些能量从哪里来,又到哪里去了?

How do all kinds of energy transform into each other?各种能量之间是怎样相互转化的?

Let's go into the world of energy together, explore the mysteries and solve the doubts in our minds.让我们一起走进能量世界,探索其中的奥秘,解开心中的疑惑。

Heat up your body让身体热起来

Let's find ways to heat up our bodies.想办法让我们的身体热起来。

What are the signs of heating up the body?身体热起来有哪些表现呢

Your body feels hot when you eat hot pot or chili吃火锅或吃辣椒时身体会感到热

What are the ways to heat up the body?让身体热起来的方法有哪些?

Eating chocolate belongs to...吃巧克力属于…

Winter fires belong to冬天烤火属于

The energy we need comes mainly from food.我们需要的能量主要来源于食物。

So, where does the energy absorbed by the body go?那么,人体吸收的能量到哪里去了呢?