同学们都知道,人体是用肺部进行呼吸的,平时我们呼吸时只能看到胸腔的起伏变化,却看不到胸腔内的肺是如何工作的。本期小实验,让我们用身边随处可见的材料,做一个实验道具,模拟人体肺部呼吸的过程。科学原理人类无时无刻都在进行着呼吸,从我们出生的那天起,呼吸就一直伴随着我们。呼吸是一个自然而然的生理过程,通常,人们只需要几秒的时间就可以完成一次呼吸过程。那么,同学们有没有思考 Students all know that the human body is breathing with the lungs, and usually we can only see the ups and downs of the chest when we breathe, but do not see how the chest cavity of the lungs work. This small experiment, let us use around the material, to do an experimental props to simulate the process of human lungs breathing. Scientific principle Human beings are breathing all the time, from the day we were born, breathing has been with us. Breathing is a natural process, and usually one takes only a few seconds to complete a breath. So, students have not thought