1. After reading the topic, you must be curious about what experiment this is. Haha, let me tell you. It's an experiment of throwing eggs from the fourth floor.

First, let's show each other our eggs. Some eggs are wrapped in thick coats; Put the egg in a warm and comfortable hut, in a paper box; Some eggs are wrapped in soft foam ... my favorite is my parachute egg.

My eggs are covered with two pieces of cloth and several layers of plastic wrap, and there are four plastic wrap bags filled with balloons on the eggs, which are used as "hot air balloons". Look at me. I have a parachute and an egg. I spent a lot of time!

4. The experiment started. The teacher asked us to put the eggs in the hot air balloon first. I took the egg and said silently, "God bless my egg not to be broken!

With the start of March 2 1 Japanese ship, eggs floated leisurely to the bottom. After I saw my big landing, I wanted to go back to the horse that was out of the circle. You can't wait to run down the stairs to see if your eggs are intact or broken.

I feel soft, I know, but the egg has been broken. However, I watched with great interest other students launch eggs. After the sound of the trumpet, it rained like an egg every day. Looking up at the sky, eggs flew down from the fourth floor and we all cheered.

7. When I arrived at the classroom, I quickly asked Zhang Hao about the principle that the egg was not broken. There are four ropes tied to his egg, and there is a big bag on it as a parachute. I asked curiously, "Zhang Hao, we all installed parachutes for eggs. Why didn't your egg break and mine did?

8. Zhang Hao replied that after my eggs are put down, the wind will go up and have buoyancy, and your eggs are not only not short of air, but also very likely to be discouraged, and the air will run away after falling heavily. If you use a balloon as a parachute, your eggs won't go bad! "I finally understand the mystery.

9. Although my egg is bad in this experiment, I am also very happy, because I finally know that if the egg falls from the height of the fourth floor, it will not be bad as long as the protective measures are taken.