The "wonderful world" of the potato

"噔, 噔, 噔" came a burst of sound in the kitchen, what is it! It turned out that my mother was cutting things. I went to the kitchen and saw that six or seven potato "babies" were "sleeping" at the bottom of the water. I watched and watched quietly. I suddenly remembered the experiment of this potato in my science book. I was wondering. : Or do I also learn to write an experiment on the book! Just do it!

I immediately brought the pot to the drums! First I turned the basin full of water, and I came to my mother for a potato. Then I put the potato in a basin filled with water. Once put down, the potato sneaked into the bottom of the water, and the potato, like I just saw, steadily "lying" under the water. After doing this experiment, I think the potato should be sinking in other waters too! So I took the salt, put it in the clear water, and stirred it evenly. After mixing, I put the potato in the salt water. I moved it. I thought the potato was definitely sinking in the water. Who knows that the potato floated in the water. On the water. When I was wondering, my classmates came to me to play. I went out to play with my classmates without saying anything. I thought: I will come back to this question. Just when I was finished, the potato changed quietly!

When I came back, I quickly ran to the side of the potato. I saw that the state of the potato in the salt water was exactly the same as that in the clear water. It was also sinking at the bottom of the water. I was surprised: How did the potato that had originally floated on the water sink to the bottom? I had a big question mark in my heart, and I put the potato back in the clear water again. After a long time, the potato slowly floated back to the water! With the problem, I rushed to the computer "master" three steps and two steps, searched the Internet, the original is this: the state of the potato in the water is heavy, the state in the concentrated brine is floating, in alcohol The state is heavy, and the state in the edible oil is also heavy. The potato sinks the salt before sinking it, put it back into the clear water, and the salt runs out again, so it floats back, and the potato is different in different waters. of. "It turned out to be like this" I breathed a sigh of relief, thinking: This problem was finally broken by me. With the breakthrough of the problem, the new problem has come out again: the size and weight of the potato is so large that it will of course sink in the clear water, then I will cut it down and will not sink! I took this question and started doing it. I cut the potato one-half and put it in the water. The potato still lie in the water, I think it may still be too big. So I cut another quarter, the potato is still sinking, and the cut is still small or the same. I quickly asked the "computer master": the state of the potato in the clear water after the weight change is heavy, and the state in the clear water after the volume is changed is still heavy. After this experiment, I know: the state of the potato in the water has nothing to do with the volume and weight of the potato! I have broken through a difficult situation.

The world of potatoes is really fun!

Sixth grade: Chen Shuna