What is interesting about an essay about an interesting experiment?

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Find an article about Once Interesting experimental composition! ! ! ! ! Urgent Urgent Urgent Urgent! 2011-4-3 12:40 Questioner: Ah is a weapon | Bounty points: 20 | Number of views: 1693 times

2011-4-3 12:47 Best answer An interesting experiment

One time, I was eating eggs, and suddenly I had an idea: Can I write on the eggs? So, as if I had discovered a new world, I hurriedly asked my father: "Dad, can I write in Dan?" "Of course!" Dad said doubtfully. "Can you teach me how to write?" I asked eagerly...

I ran to the kitchen excitedly...

I first took out an egg and put it Wash it, and then carefully dry it; then use a brush dipped in sour vinegar to write the word "Song" on the eggshell, and then put the egg in the air for a while, because according to Dad, You need to wait until the vinegar evaporates. I saw that the time was almost up, so I put the eggs in the pot and started boiling. A minute passed, and I took out the egg. "Hey, why isn't it cooked yet? Time flies so slowly!" I reluctantly put it into the pot again. Two or three minutes passed, and I couldn't wait to take out the eggs. "Haha, it's done!" I said to myself proudly. I put the egg into cold water and waited for it to cool. I stared at the egg - the fruit of my labor. 50 seconds passed. I opened the egg excitedly and looked at the white and smooth egg body. "Oh my God! The song I wrote on the eggshell was actually printed on the egg." I said in surprise. However, this experiment still puzzles me.

I held this unusual egg, rushed into the study with doubts, and turned on the computer... It turned out that after acetic acid dissolved the eggshell, it could also dissolve a small amount of protein, and protein has an amino acid composition. Yes, it will hydrolyze under acidic conditions and appear blue or purple. "That's it! It really enlightened me!"

From this experiment, I understand: In fact, in daily life, as long as we observe carefully, we will find many interesting things. If we can pay By taking various actions, you can also gain more knowledge. Isn’t it killing two birds with one stone!

"I'm so happy today. I finished my homework in half an hour. It's great!

" I said to myself. What to do with the rest of the time?

I should go see the little goldfish my mother bought. I walked quickly to the oblate fish tank. The fish seemed to welcome me and swam towards me one by one. Among them, the lion-headed goldfish raised its big head and swung its red and white tail, as if to show off its beauty. I suddenly thought: Why do fish control balance in the water?

I observed that the fish kept swaying when swimming. Are the fins and tail at work? In order to verify my conjecture, I conducted a bold experiment. I first prepared small scissors, fishnets, and gauze. Then I used a fishing net to fish out a small grass carp that was feeding the turtle. The fish seemed to be aware of the danger - it struggled desperately. I silently said to the small fish: "Little fish, don't be afraid. In order for the experiment to succeed, you have to do it." Give it a try!

" I stuck the double-sided tape on my thumb and index finger and stuck the little fish on. I carefully picked up the scissors and cut the little fish off one by one. After cutting off the fins, I gently put the bald fish into the fish tank. At first, the little fish struggled for a while and then sank to the bottom. After a while, it also No more swimming. It seems that my guess is correct.

I was still a little worried, so I checked the encyclopedia, and it really said: The fins of fish are used to allow fish to control balance. The fish's tail controls direction. Through this experiment, I feel how interesting it is to gain knowledge through observation and experiment!

Or~~~~~~~~~~~~~~~

I like insects, and I go outside to observe them whenever I have time. Today, I did all my homework.

Just when I was thinking of going outside to observe insects, the dark night began to fall, and God also began to "shed tears"!

I looked at the sky and couldn't help but sigh, thinking to myself: The weather was fine just now. It won't rain sooner or later. It will start raining as soon as I go out. When I was worried, my mother asked me to drink wolfberry tea. As soon as I saw wolfberry tea, I immediately became interested in it. Because I saw a lot of wolfberry floating on the top of the teacup and a few wolfberry berries at the bottom of the teacup, I felt very strange. Why do some wolfberries float on the water and some sink to the bottom of the teacup? I thought about it carefully: Maybe it's because wolfberry is like a ball, and it can float on water if there is air inside.

I started doing small experiments. First, I took out two wolfberry seeds floating on the water, put one of them in the water, and flattened it with a pair of chopsticks. As expected, the wolfberry bubbles popped up in the water. . Then I took off the chopsticks and observed whether the wolfberry would sink. I saw that the wolfberry slowly sank. Then I pushed another wolfberry to the bottom of the tea cup with chopsticks, then took off the chopsticks. This wolfberry slowly floated up, and finally floated to the surface of the water. Alas, I finally figured it out. Turns out my guess was right. Because the air inside the first wolfberry came out, it sank. There was still air in the second wolfberry, so it floated up.

Through this small experiment, I learned a truth: wolfberry is like a ball. If there is air inside, it will float on the water, but if there is no air, it will sink.

What else~~~~~~~~~~~~~~~~~~~~~~~~~~~

I really want to know how to use water Putting too much or too little can make mung beans grow into mung bean sprouts faster. A few days ago, I did an experiment to test it. I first took two plastic boxes, then paper towels and water, and two mung bean seeds. I first put paper towels in the two boxes, then put 50 drops of water in one box and 50 drops of water in the other box. Put 80 drops of water, then I put two mung bean seeds in two boxes respectively, and wrote the numbers. The one with more water is No. 1, and the one with less water is No. 2. Finally, I put the box on the balcony facing south. . After doing all this, I feel very happy and I will know the result soon. I also guessed that the mung beans in the group with more water would germinate faster. I stood quietly on the balcony waiting patiently for this moment to arrive. I waited for about 2 hours and found that the seeds in box No. 1 were much larger, while the seeds in box No. 2 had almost no change. I waited another 3 hours or so and found that the seed skin in box No. 1 was broken, while the seeds in box No. 2 had only grown much larger. I was secretly happy and continued to wait for the moment when the seeds sprouted. About another three hours later, I looked again and found that Bean No. 1 had stretched out a leg, while Bean No. 2 only had its skin broken. I thought: It will take a while to know the result! I waited for 2 hours, and I saw the seeds in the box with more water sprouting. I made the seeds sprout faster. I shouted happily: "I guessed it right, I succeeded!" Yeah! This mung bean germination experiment has benefited me a lot! Agree 46 | Comments (2)

Ask TA for help Respondent: shanexing From the team Eagle Wings English Group | Level 12 adoption rate: 31% Celebrities

Area of ??expertise: Study help

Activities participated in: No activities currently participated

Other answers***12

2011-4-3 12 :46 Enthusiastic Netizens

I am a test subject 007 Agree 1| Comment 2011-4-3 12:47 Prince 00 | Level 2

Search online Agree 1| Comment 2011-4 -3 13:24 13584853855 | Level 1

"I'm so happy today, I finished my homework in half an hour, great!

" I said to myself. What to do with the rest of the time?

I should go see the little goldfish my mother bought. I walked quickly to the oblate fish tank, and the fish seemed to welcome me, swimming up and down towards me. Among them, the lion-headed goldfish raised its big head and swung its red and white tail, as if to show off its beauty. I suddenly thought: Why do fish control balance in the water?

I was still a little worried, so I checked the encyclopedia, and it really said: The fins of fish are used to allow fish to control balance. The fish's tail controls direction. Through this experiment, I felt how interesting it is to gain knowledge through observation and experiment!

Or~~~~~~~~~~~~~~~

I like insects, and I go outside to observe them whenever I have time. Today, I did all my homework. Just when I was thinking of going outside to observe insects, the dark night began to fall, and God also began to "shed tears"!

I looked at the sky and couldn't help but sigh, thinking: The weather was fine just now. It will stop raining sooner or later. It will start raining as soon as I go out. When I was worried, my mother asked me to drink wolfberry tea. As soon as I saw wolfberry tea, I immediately became interested in it. Because I saw a lot of wolfberry floating on the top of the teacup and a few wolfberry berries at the bottom of the teacup, I felt very strange. Why do some wolfberries float on the water and some sink to the bottom of the teacup? I thought about it carefully: Maybe it's because wolfberry is like a ball, and it can float on water if there is air inside.

Through this small experiment, I learned a truth: wolfberry is like a ball. If there is air inside, it will float on the water, but if there is no air, it will sink.

What else~~~~~~~~~~~~~~~~~~~~~~~~~~~

I really want to know how to use water Putting too much or too little can make mung beans grow into mung bean sprouts faster. A few days ago, I did an experiment to test it. I first took two plastic boxes, then paper towels and water, and two mung bean seeds. I first put paper towels in the two boxes, then put 50 drops of water in one box and 50 drops of water in the other box. Put 80 drops of water, then I put two mung bean seeds in two boxes respectively, and wrote the numbers. The one with more water is No. 1, and the one with less water is No. 2. Finally, I put the box on the balcony facing south. . After doing all this, I feel very happy and I will know the result soon. I also guessed that the mung beans in the group with more water would germinate faster. I stood quietly on the balcony waiting patiently for this moment to arrive. I waited for about 2 hours and found that the seeds in box No. 1 were much larger, while the seeds in box No. 2 had almost no change. I waited another 3 hours or so and found that the seed skin in box No. 1 was broken, while the seeds in box No. 2 had only grown much larger. I was secretly happy and continued to wait for the moment when the seeds sprouted. About 3 hours later, I looked again and found that Bean No. 1 had stretched out a leg, while Bean No. 2 only had its skin broken.

I thought: It will take a while to know the result! I waited for 2 hours, and I saw the seeds in the box with more water sprouting. I made the seeds sprout faster. I shouted happily: "I guessed it right, I succeeded!" Yeah! This mung bean germination experiment has benefited me a lot! Agree 1 | Comment 2011-4-4 10:44 472077328 | Level 2

Everyone has seen little ants, but have you ever observed them carefully? I used these little ants to do an interesting experiment.

I first brought some mothballs, then found a few ants, and started to experiment. I first experimented with a mothball and an ant. I took out the mothball and scratched it in front of the ant. I drew a white line in front of the ant, and saw the ant turning left and right, and soon bypassed the defense line. I drew a white line in front of the ant, and saw it probing its head, as if looking for a way out, but after a while, The ant successfully found the exit again. I think the ant is very smart and can find the way so quickly. But what should the ant do if we have to deal with this circle next? I used mothballs to draw a circle around the ant. The ant suddenly looked like a headless fly, bumping here and there, but it couldn't get out. I patiently narrowed the circle little by little, and a miracle happened. Look. ! The ant stayed in the circle for a while, then broke out of the circle and ran out, but seemed to find its way home and wandered around in the original circle again. I did the experiment several times in a row, and the results were almost the same. I was a little confused, how did the ants break through the encirclement and ran out?

Draw a circle with moth balls and the ants cannot escape in the circle, because the smell of moth balls blocks the smell left by the ants when they crawl, so the ants cannot find their way home, but after passing He worked hard but broke out of the encirclement.

I discovered a truth through this experiment: no matter how difficult the situation is, you must work hard, only in this way can you succeed and unlock the mystery.

An interesting experiment

Once, I was eating eggs, and suddenly I had an idea: Can I write on the eggs? So, as if I had discovered a new world, I hurriedly asked my father: "Dad, can I write in Dan?" "Of course!" Dad said doubtfully. "Can you teach me how to write?" I asked eagerly...

I ran to the kitchen excitedly...

"I'm so happy today. I finished my homework in half an hour. It's great!

" I said to myself. What to do with the rest of the time?

Then I used a fishing net to fish out a small grass carp that was feeding the turtle. The fish seemed to be aware of the danger - it struggled desperately. I silently said to the small fish: "Little fish, don't be afraid. In order for the experiment to succeed, you have to do it." Give it a try!

I was still a little worried, so I checked the encyclopedia, and it really said: The fins of fish are used to allow fish to control balance. The fish's tail controls direction. Through this experiment, I felt how interesting it is to gain knowledge through observation and experiment!

From elementary school to junior high school, science has always been my favorite subject. I have done countless experiments in science class, but among these countless experiments, there is only one that remains fresh in my memory, and that is the coin experiment I just did not long ago.

In the science class that afternoon, the teacher announced to us: "Today, I am going to do a very interesting experiment with everyone!" "Yeah!" As soon as the words fell, the students cheered. "Is this an experiment of throwing coins into water?" A classmate wondered. "That's right! Who among you has coins?" "Me! Me! I do!" The students all rushed to "hand in" their coins.

The experiment began, and the teacher threw coins into the full water glass. I squeezed in front, opened my eyes wide, and stared at the water glass closely, for fear of missing any small link. "One, two, three..." One coin after another "jumped" into the water glass, and the water level was also rising. The teacher suddenly stopped and asked: "Students, guess what will happen next?" "The water will overflow!" the students said in unison. "Wrong! Let's continue reading!" "Who still has coins?" The teacher "searched" for six more coins on the students and carefully put them into the water one by one. The last coin jumped with a "plop" After entering the water, like a well-trained diver, it rotated 360 degrees in the water before falling safely to the bottom of the cup.

At this time, the students were surprised to find that the water surface exceeded the mouth of the cup, and it was half a centimeter! The classmates immediately surrounded the teacher and asked what the reason was, but the teacher gave it a try and asked us: "What do you think?" We were all monks who were two feet tall - scratching our heads. After repeated inquiries from the students, the teacher finally opened the "Golden Mouth" and said mysteriously: "This is the tension of the water surface. It is this invisible force that supports the water surface to exceed the mouth of the cup without overflowing." It turns out that it is. so! We finally understand why.

This experiment taught us that we cannot draw arbitrary conclusions about anything. Only by having the courage to explore and practice can we uncover the answer. There are still many secrets in nature. I believe that as long as we continue to explore, we can solve many mysteries. "Ding Ling Ling", as soon as the class bell rang, the teacher walked into the classroom with a happy face. "Classmates, have you brought all the eggshells?" "Yes!" we replied in unison. "But what can you do with eggshells?" "Can you make a roly-poly?" we whispered. "Today, we are going to do a small experiment with these two half eggshells. Before we do it, please guess. I will use this pencil to stab the eggshell vertically downward to see which half of the eggshell breaks first. "What?" "The one with the mouth facing down will break first!" most boys said, pointing to the half of the eggshell. "The one with the mouth facing up will be broken first!" my deskmate said decisively. Many girls were sitting, hesitant. "Okay! Let's do it now and see who has the correct answer."

The teacher asked a classmate to help. He pointed a pencil at the teacher's hand with his mouth facing upwards. The eggshell, when I put my hand down, the pencil fell on the eggshell, but the eggshell was not broken. The second time the pencil fell, it fell into the teacher's hand, then fell to the ground, and the pencil lead broke. The teacher took out another pencil, and this time she did it herself. Just two drops of the pencil, the eggshell with the mouth facing upward was broken. Then, the teacher took the pencil and stabbed the eggshell with the mouth facing down. "One, two, three..." We counted together, but this half of the eggshell seemed to be wearing armor, and it did not break even after being stabbed for more than ten times.

“Yeah! I guessed it right!” My deskmate danced with joy. "Okay! Let me ask the students to do it themselves to see if this is an accidental phenomenon." "Yes, don't get too proud first!" We are not convinced.

After we did this little experiment ourselves, we finally realized that it is easier to prick two and a half eggshells vertically with a pencil because the force on the eggshell facing downward is concentrated, so it is easier. Being punctured; the eggshell with the mouth facing down is dispersed, so it is not easy to be punctured. No wonder the workers at our school's construction site all wear helmets with their mouths facing downwards. It turns out they are all for the same reason!

Small experiments contain great truths. This class is really interesting! Agree 1 | Comments 2011-4-8 22:04 Ray zzl | Level 2

Everyone will do many experiments in their life. As long as we observe carefully, we can find them.

During the summer vacation, my mother and I had nothing to do at home, so we started playing table tennis. We were playing around and having a great time. Suddenly my mother came up with a "squat ball". The ball hit me on the forehead and fell down again. I accidentally stepped on it. , the table tennis ball was dented into a large piece, like a crying baby's head, and like a deflated balloon. I was so sad that I said to my mother dejectedly: "My ball is broken. It's really disappointing. It's all my fault." ." Mom saw me like this. She smiled and said, "It doesn't matter, I have a way to make it better."

Mom went to the kitchen and boiled a pot of boiling water, and the lid kept boiling. Bai Yan, then took a teacup and poured half a cup of boiling water, finally put the ball in, and used a pair of chopsticks to press down the flattened area of ??the table tennis ball so that the hot water could soak its wound. Sure enough, the table tennis ball slowly The ground swelled, and in the end, no traces of stepping on it could be seen, and it returned to its original round appearance. It was even whiter and brighter than before, as if it had just been bought. I asked my mother in surprise: "What on earth is this?" What's going on?" My mother told me: Because there is air in this ping pong ball, soak it in boiling water and quickly heat it. If the ping pong ball is not broken, the air inside will expand, just like blowing up a balloon. , the ball is propped up, this is called "thermal expansion and contraction". They also say that these are physics knowledge that the teacher will teach us in junior high school.

In our lives, we often encounter When we encounter many things, as long as we think of solutions, observe with our hearts, and use our knowledge and brains to do experiments with our hands, we will get unexpected surprises, are you right?

"Good day today Happy, I finished my homework in half an hour, great!

" I said to myself. What to do with the rest of the time?

I was still a little worried, so I checked the encyclopedia, and it really said: The fins of fish are used to allow fish to control balance. The fish's tail controls direction. Through this experiment, I felt how interesting it is to gain knowledge through observation and experiment!

Or~~~~~~~~~~~~~~~

Through this small experiment, I learned a truth: wolfberry is like a ball. If there is air inside, it will float on the water, but if there is no air, it will sink.

What else~~~~~~~~~~~~~~~~~~~~~~~~~~~

I really want to know how to use water Putting too much or too little can make mung beans grow into mung bean sprouts faster. A few days ago, I did an experiment to test it.

I first took two plastic boxes, then paper towels and water, and two mung bean seeds. I first put paper towels in the two boxes, then put 50 drops of water in one box and 50 drops of water in the other box. Put 80 drops of water, then I put two mung bean seeds in two boxes respectively, and wrote the numbers. The one with more water is No. 1, and the one with less water is No. 2. Finally, I put the box on the balcony facing south. . After doing all this, I feel very happy and I will know the result soon. I also guessed that the mung beans in the group with more water would germinate faster. I stood quietly on the balcony waiting patiently for this moment to arrive. I waited for about 2 hours and found that the seeds in box No. 1 were much larger, while the seeds in box No. 2 had almost no change. I waited another 3 hours or so and found that the seed skin in box No. 1 was broken, while the seeds in box No. 2 had only grown much larger. I was secretly happy and continued to wait for the moment when the seeds sprouted. About 3 hours later, I looked again and found that Bean No. 1 had stretched out a leg, while Bean No. 2 only had its skin broken.

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