篇一：
An interesting experiment composition
I'm a little science fan. Today, my mother and I did an interesting experiment at home - solar fan.
The experimental materials are motor shell, solar panel, maple leaf, column, etc.
五带划分First, my mother asked me to install the motor into the motor housing, then connect the motor wire to the fan rod, then connect the solar panel, and finally, install the ba connection switch. Inrt the fan blade, and a big solar fan is born. I presd the switch excitedly, expecting the fan to turn. However, the fan stood still and slept there. I wondered which step I had made a mistake. My mother saw my anger and said, "Try it in the sun?" I did as my mother said, and the fan really turned.
Eh, why do fans turn up in the sun? A big question mark popped up in my head. After listening to my mother's explanation, it was the principle that solar energy was converted int
o electricity. Oh, I suddenly realized.
现场应急处置方案What a happy day! I have acquired new knowledge.
篇二：哪些食物热量高
An interesting experiment composition
配气相位
丝瓜豆腐汤This morning, the teacher and we did an interesting experiment in composition class - floating villains.
五倍子的功效The materials to be prepared for the experiment are: a dry plate, a water-bad marker, and half a glass of water.
First, I took out a dry plate and a water-bad marker and put them on the table. Then, I took the pen and drew a small matchmaker on the dry plate. Draw the matchmaker veral more times to make it thicker. Then, when the ink is dry, pour water in. You must wait until the ink is dry. How can you tell the ink is dry? You can take the dish askew and
have a look. If there is no ink, you can do it. Then, slowly pour the half cup of water from the edge of the dish into the middle of the dish. Remember not to pour it all at once, but also pay attention not to pour too much, just pour a little, and cover the bottom of it completely. Finally, gently shake the plate, and the little matchmaker moved, as if he were swimming in the water.
Why is this? I was puzzled. The teacher uncovered the mystery for us. It turns out that the water-bad marker contains a substance called stripping agent, which is easy to be washed away or wiped off by water. The pattern drawn by the water mark is easy to leave the plate and float on the water.
Today's experiment is really interesting. It turns out that we still have so much scientific knowledge in our lives.
篇三：
An interesting experiment composition
白天咳嗽
Today, the teacher nt a video of a scientific experiment in the class - a floating villain. After I read it, I found it very interesting and couldn't wait to try it.
I asked my mother to help me find the materials needed for the experiment: a plate, half a glass of water, and a water marker.
The experiment began. First of all, I wiped the dishes with a paper towel and let the natural wind dry them. Then, I picked up the water marker and drew a cute figure on the plate, and I had to draw it twice more. Only in this way can the villain paint more solidly. Then, let the wind slowly blow dry, and then slowly, little by little, pour water from the edge of the plate to the inside. Finally, I shook the plate carefully. After a while, the little man floated up and floated in the water as if he were swimming? I laughed happily.
What the hell is going on? I checked on the Internet and finally found the answer. The original water-bad marker contains a substance called stripper, which is washed away or wiped off by water. The villain with water mark strokes on the plate can easily get away from the plate and float in the water.
湖北咸宁市
This experiment is amazing! I have gained new knowledge today.
