Diary of scientific experiment

The day is coming to an end, and I believe everyone has a lot of experience, which means you have to start keeping a diary again. What kind of diary should you read? The following is my diary of scientific experiment for you, for reference only, I hope it will help you.

Diary of scientific experiment 1 Sunday, I want to do an interesting experiment. I brought a curious basin of water and some plasticine.

I first kneaded the plasticine into a ball, looked at the round plasticine and thought, "This will definitely sink, just like a stone will sink into the sea." I carefully put plasticine into the water, and it sank to the bottom in less than a second.

I built another boat, "I believe it will be successful this time!" " "I said confidently. I put the plasticine in the basin. After a few minutes, the plasticine didn't sink, so I jumped up impulsively. Happy to say: "Mom, look! Finally floated up! "

What if you make it into the shape of a leaf? I thought, "I'm sure I can float up this time!" " I can impulsively hear my own rapid heartbeat! I gently put plasticine into the water. "Wow, it's really floating!" "I couldn't help cheering. However, in a few seconds, I lowered my eyes. The water slowly came up from its edge, and gradually, it also sank.

Why can rowing boats float on the water? With questions, I taught my father, who said it was related to buoyancy. Under the same weight, the greater the volume in contact with water, the more plasticine can float on the water.

This is really an interesting scientific experiment, which can be done with hands and brains. Very provocative, but also learn scientific common sense. I like it very much!

Diary of Scientific Experiment 2 In today's composition class, Teacher Zhou took the students to do an interesting scientific experiment. This little experiment is called "triboelectrification". After listening to this name, everyone must be curious, so let's do it together.

I began to do the experiment, only to see Mr. Zhou take out a plastic ruler and rub it repeatedly on my hair, which produced static electricity. At this time, the miracle began, and the small pieces of paper torn into pieces easily touched the ruler. At that time, small pieces of paper really jumped up from the table like agile little soldiers who heard the commander's orders, like groups of dancing butterflies, like small white planes flying into the beautiful "sky", like groups of clever little monkeys climbing up the "big tree" to pick bananas. Is this experiment amazing? If you touch it with a steel ruler, the small paper will not move.

After Mr. Zhou's experiment, the students also tried it, and everyone was curious. Teacher Zhou said to her classmates, "This phenomenon is called friction electrification. As long as you rub plastic things repeatedly on hair, sweaters and jeans, it will generate static electricity and you can suck up small pieces of paper. " After listening to teacher Zhou, the students all understood.

Ah, nature is really a magical magician. As long as you observe carefully, you will find the mystery in nature!

I believe everyone understands the principle of "friction electrification"?

Diary of Scientific Experiment 3 9.27 It's sunny.

Today, I am conducting a scientific experiment: the change of soybean. I took a cup, put a paper towel on it, filled it with water, put five soybeans in it, and began scientific experiment observation. I have carefully studied the lovely and touching soybeans. Yellow clothes exude charming light, and my small body looks so moving. I think "baby" you should grow up quickly, I will be good to you, come on! Work hard!

The weather is fine.

Today, I am very proud, you know? My "baby" has grown that small, lovely little root, white, but very thin, alas! Oh, my God! Soybeans, you should absorb sunlight, water and nutrients quickly. You must grow fat and strong quickly! I am very optimistic about you!

It's sunny

God, my baby has grown leaves. I'm so happy! You are such a good boy, look! You are so cute, you are so small and flexible, and you are fat for nothing. I will send you a good boy certificate and the best soybean certificate. I believe you will be a bean in a million. Your roots are so strong, your stems are so hard, and your leaves are so fresh and green that people look very comfortable.

Raising soybeans requires patience and careful observation. Let's all raise pots of plants and be a patient and serious boy!

Diary of Scientific Experiment 4 Sunday, I want to do an interesting experiment. I brought a curious basin of water and some plasticine.

I first kneaded the plasticine into a ball, looked at the round plasticine and thought, "This will definitely sink, just like a stone will sink into the sea." I carefully put plasticine into the water, and it sank to the bottom in less than a second.

I made another boat. "I believe I will succeed this time." I said with confidence. I put the plasticine in the basin. After a few minutes, the plasticine didn't sink, so I jumped up impulsively. He said happily, "Mom, look. Finally floated up. "

What if you make it into the shape of a leaf? I thought, "I'm sure I can float up this time." I impulsively heard my own rapid heartbeat. I gently put plasticine into the water. "Wow, it's really floating." I can't help cheering. However, in a few seconds, I lowered my eyes. The water slowly came up from its edge, and gradually, it also sank.

Why can rowing boats float on the water? With questions, I taught my father, who said it was related to buoyancy. Under the same weight, the greater the volume of contact water, the more plasticine floats on the water surface.

This is really an interesting scientific experiment, which can be done with hands and brains. Very provocative, but also learn scientific common sense. I like it very much.

Diary of Scientific Experiment 5 Today, I solved a difficult problem with scientific knowledge, and let me understand how important science is to our life through small experiments.

One night, I was helping my mother cook dinner. My mother asked me to unscrew the newly bought soy sauce bottle, but I couldn't. I asked my mother, "Mom, why can't the soy sauce bottle be unscrewed?" Can you help me unscrew it? "Mom said," First, you can twist it hard, or you can use your head and think of other ways. "I said angrily," Mom, why don't you help me unscrew it? " Mom said, "think again, but I won't tell you." "I have to think about it. I thought it should belong to science. So, I began to turn over the science books I had studied unhappily. Suddenly, I turned to the lesson that heat expands and cold contracts. My heart is sweeter than eating honey and happier than getting 100. I said to myself, "Let me try this expansion and contraction. "It's no use watching you swell with heat and shrink with cold at ordinary times. Today, I will test your ability to expand when heated and contract when cooled. " Say, just try it in the kitchen. Put some hot water first, soak the soy sauce bottle in hot water for five minutes, and then rinse it with cold water. It's easy to unscrew. I think: Is there so much scientific knowledge hidden in human life? Is this scientific knowledge just waiting for us to dig?

After this incident, I sincerely thank science. It helps me to make progress and grow. I love you, science.

Diary of Scientific Experiment 6 Teacher Ye brought some eggs today. What is this for? Is it for us to eat? Finally, the teacher announced the answer, which turned out to be to let the eggs fall from a height without breaking.

How can we keep the eggs from breaking? The students talked about it one after another, and some said, "Wrap the eggs with cotton, sponges and the like, and let the eggs wear thick protective clothing." Some said, "Make a' safe house' for eggs and let them lie comfortably in it." Some said, "You can make a parachute for eggs and let them descend slowly like paratroopers." Students still have many ways, really. It's all kinds of whimsy.

The experiment began, and the students were worried about the egg. Is he broken or intact? The teacher rolled A4 paper into a cylinder and put the eggs in the cylinder with double-sided tape. The egg lay as still as a good boy. "Three, two, one" eggs "bang". We were just about to see it when the egg white came out. The first time ended in failure. It's okay. Failure is the mother of success. The second time was not a complete success, and the egg was still a little skinned. The third time, we were even more nervous. I thought, "Will we end up in failure?" "Three, two, one, let go." The egg rolled out of the paper tube and the experiment finally succeeded.

This experiment tells us that if you try more, you will get something.

Diary of Scientific Experiment 7 I finished my homework at noon today. I started a scientific experiment because I was bored.

First, I found a cup, an egg and a bag of salt. The name of the experiment I want to do is "The Rise of Eggs". I poured water into the cup and put the egg in, only to see the egg sink like a submarine for investigation; Sleeping at the bottom of the cup like a lazy man again.

I put a spoonful of salt in the cup, and I saw that the egg just jumped up and then lay down feebly. I was not content, so I added another spoonful of salt and said to myself, Dear Maruko. Get up, get up. But the balls didn't want to, just jumped and lay down again. God, he is really lazy. He is really lazy. The third spoon, I thought: Master Egg, what time is it? Get up. I see that the eggs have not changed at all. Just when I was depressed, Uncle Egg finally woke up and took a bath comfortably like a fat man.

Later, I understood through the computer: when the weight of the object is greater than the buoyancy, the object will sink; When the weight of an object is less than the buoyancy of water, the object can float, and salt increases the buoyancy of water.

Science is really interesting. I love science.

Diary of Scientific Experiment 8 Tuesday, February 22nd

On a sunny Friday afternoon, "Ding, Ding" was accompanied by a sweet bell. Teacher Qiu walked into the classroom with cheerful steps and said to us, "Let's do a scientific experiment in this class." As soon as they heard that they were going to do the experiment, everyone immediately got excited and stared at the teacher's hand with big black eyes. I saw that Mr. Qiu took out a small iron ball and said, "Heat it first, and watch it expand with heat and contract with cold." How to prove it? I am more curious. Oh, it turns out that Mr. Qiu also prepared a small iron ring, which just covers the small iron ball. The teacher said that he had done it in Class 6, and the experiment was very successful. Oh, I think it's time to witness a miracle.

Teacher Qiu asked Liu Xian to heat the iron ball, and then put the iron ring on it. (If the hoop fails to catch the iron ball, the test is successful. )

I held my breath and stared at the teacher. The experiments of "Tintin" and "Alas-"failed, but Mr. Qiu was not discouraged. He did the experiment again and again, but failed. Ding, Ding is over. An interesting science class ended in our laughter.

The bell rang for the diary of scientific experiment 9, and the students rushed to the science laboratory. I heard that the teacher from another school is coming to give us an interesting science experiment class!

The teacher introduced himself and the course first, and then distributed the experimental tools in groups: alcohol lamps, tripods, lighters, asbestos nets, and even mutton and potatoes. Some greedy classmates seem to be drooling already! First of all, the teacher let us know through PPT that there are four steps to distinguish whether food is raw or cooked. Then the teacher asked us to have a real battle to test whether we can distinguish cooked potatoes from raw potatoes. Each of our four team members takes a step. The first person watches the second person touch the third person and smells the fourth person. Through the efforts of four people, we successfully distinguished cooked potatoes from raw potatoes.

Then the teacher wants us to know how food changes from raw to cooked. The teacher asked us to set up a tripod, an asbestos net, light an alcohol lamp and put the mutton in a measuring cup full of water. After careful observation, we found that the color of mutton changed during heating.

Finally, the teacher gave us corn kernels to heat in a measuring cup without water. Soon, the pediatric laboratory was full of "pop" sounds, and the original corn kernels turned into popcorn. The students couldn't help eating with relish, and they were so happy!

This is really an interesting science experiment class. Everyone mastered scientific knowledge in the process of doing it, and at the same time they were full.

Diary of scientific experiment 10 went to an experimental class today.

First, the teacher showed us a magic trick. The teacher filled two cups with water and powder respectively, and one was an empty cup. The teacher changed the positions of the three cups, and then let's guess which cup is filled with water. Surprisingly, there is no water in the three cups. It turned out that the teacher secretly sucked water with absorbent powder.

Next, the teacher showed us the volcanic eruption. The teacher first put some white liquid in the cup, then added some sodium bicarbonate and ozone, and the volcanic eruption began. A thick smoke came out of the bottle. It gave us a fright.

Finally, we made a desk lamp with the teacher. The teacher gave us a mercury column diode and a light-emitting diode, as well as some wires and batteries. The teacher taught us to connect these things with wires, and the LEDs lit up. Then we put the wires and batteries in the paper cup, and the light-emitting diodes came out from the bottom of the paper cup. Then use an empty paper cup to fasten the mouth of the paper cup with LED, and stick the two paper cups together with adhesive tape, so that the desk lamp is finished. We can switch the light by the flow direction of the mercury column.

Science is really interesting.

Diary of scientific experiment 1 1 Sunday, I want to do an interesting experiment. I brought a curious basin of water and some plasticine.

I first kneaded the plasticine into a ball, looked at the round plasticine, which was as round as a ball, and thought, "This will definitely sink, just like a stone will sink into the sea." I carefully put plasticine into the water, and it sank to the bottom in less than a second.

What if you make it into the shape of a leaf? I thought, "I'm sure I can float up this time!" " I'm so excited, I can hear my heart beating fast! I gently put plasticine into the water. "Wow, it's really floating!" I can't help cheering. However, after a few seconds, I was disappointed. The water slowly came up from its edge, and gradually, it also sank.

I made another boat, "I believe it will be successful this time!" " "I said confidently. I put the plasticine into the basin, and sure enough, after a few minutes, the plasticine didn't sink, so I jumped up with excitement. Excitedly said: "Mom, look! Finally floated up! "

Why can the ship float on the water? With questions, I asked my father. Father said it had something to do with the principle of buoyancy. Under the same weight, the bigger the shape of plasticine that touches the water surface, the more it can float on the water surface.

This is really an interesting scientific experiment, not only with your hands, but also with your brain. It's challenging and you can learn scientific knowledge. I like it!

Diary of Scientific Experiment 12 On Saturday morning, I came to the composition class and the teacher said, "Let's do a little magic today." Hey, can the teacher do magic?

Later, I learned that the teacher said that magic is to do experiments!

At the beginning of the experiment, the teacher said, "In the experiment, we need white vinegar, detergent, pigment, baking soda and beaker." I saw the teacher first pour white vinegar into the beaker, then drop three drops of detergent into the beaker, then stir with chopsticks, then add pigment, stir again, and finally add baking soda. There were some bubbles in the beaker when the teacher added the first spoonful of baking soda. The teacher added another spoonful of baking soda and the bubble burst.

Everyone remembered all the experimental steps and we finished the experiment in groups. The first group made blue bubbles, the second group made yellow bubbles and the third group made orange bubbles. After the experiment was successful, everyone was very happy!

The teacher told us that this phenomenon occurred because white vinegar was acidic and baking soda was weakly alkaline. White vinegar mixed with baking soda will produce carbon dioxide, and carbon dioxide in water will become bubbles. Adding detergent can enrich bubbles.

It turns out that there are such interesting experiments in life. I really want to do this again!

Diary of Science Experiment 13 Today, the science teacher gave us an experiment. At the end of class, the teacher will give us an experiment. In order to let us see clearly, the teacher put a bench on the lecture table, then took out three candles, two empty glasses and an empty paper cup and put them on the bench. Then the teacher said, "Here are cups 1, 2, 3. Look at the candle in this cup. " Then the teacher put a chess piece under the No.2 cup. The students all said that the third cup was put out first. I looked at it carefully and found that the 1 cup is a paper cup with a hollow bottom, while the No.2 and No.3 cups are both glasses. It must have been the last release of the No.3 cup! Then it will go to the No.2 cup, and finally the 1 cup will go out because there is a lot of air in it.

The experiment has begun! The teacher lit three candles, but just as the third candle was lit, the second candle went out. I haven't had time to cover the cup yet! Will go out, will give the teacher a disgrace. I'm sure the second candle didn't end well. Probably the first one to go out! Let's have a look! After lighting the candle, the teacher picked up the cup and prepared to cover it. Just when the second cup was covered, it was probably accidentally touched and went out in a second. The third cup is the second one to go out. Then the teacher picked up the first cup and accidentally knocked out the first candle. It seems that this is an unsuccessful experiment! According to the truth, the third candle should be extinguished first, alas! It seems that this experiment was not successful! But at least we all know the result.