How to write an experimental essay on eggs floating

The eggs floated.

This afternoon, in the Little Orange Lantern class, Mr. Kong and we did an experiment on eggs floating, and I was very curious.

The ingredients are simple, an egg, a cup with half a glass of water, a pair of chopsticks and a bag of salt.

The experiment began in earnest. First of all, Mr. Kong put an egg in the water filled with most of the glass, and the egg was like a diver, just listening to the sound of "plopping", the egg sank to the bottom of the water, and slept in the water like a lazy sheep. Then, Mr. Kong added salt to the water, only to see the egg float up a little bit, and then Mr. Kong kept stirring with chopsticks, and then the egg came up like a spinning top, huh?

The egg really floated, and Mr. Kong asked us to taste the water, it was so salty, and Mr. Kong laughed: she used her middle finger first, and then she tasted her index finger. Tricked us, haha!

Why is that? Because when you put salt in the water, the salt melts, and the specific gravity of the salt water is high, and the eggs float.

Today, we learned something new – density.

The eggs float up.

This morning, the teacher asked us to do an interesting experiment called "Bringing Eggs to the Surface". It sounds quite interesting, I don't know what kind of scene it is, I'm looking forward to it!

Let's start experimenting! First of all, take out an empty cup and fill most of the cup with half a cup of water, gently pick up the egg and put it in the water, only to see the egg quickly sink to the bottom of the cup. I took the salt bag, poured it into the water little by little, and stirred it in the cup with a spoon so that the salt dissolved, and the egg sank to the bottom of the cup, motionless; I poured some more salt into the cup and stirred it with a spoon, and the egg was still not moving.

What's going on? Did my experiment fail? Or am I not putting enough salt?

I decided to try again, picked up the salt bag again, and kept pouring salt into it, and the water became cloudy, and a miracle finally happened, and the egg that sank to the bottom of the cup rubbed ......like a stimulantRub ......Swimming straight to the surface of the water, my little head poked out all of a sudden! I shouted with joy, "Great!

It's a success! "Ah, what an interesting experiment!

On Sunday morning, we did an interesting experiment in Zhujun Garden, and the experimental materials we prepared were: an egg, a glass of water, a packet of salt, and .

A chopstick. When Lu Shou heard the experimental materials I introduced, did he already have a lot of questions in his mind? Then Yuan Lao hurry up and follow me to see the experimental process!

I saw that the teacher carefully put the eggs into the water first. At this time, the egg lies quietly under the water like a sleeping little girl. And the students stared intently, as if they were thinking:

The egg can swim, so does it float on its own, or does it rely on tools to float? I'm so curious! I'd love to see the results soon!

Then the teacher began to put the salt in it spoonful by spoonful, and the salt in the water was like snowflakes flying all over the sky, which was beautiful. The teacher stirred with chopsticks, and the salt in the water danced in the water like a dancer. But the eggs can't come up, like naughty children.

Eggs can really swim, so what kind of "magic" is that? Later, through the teacher's explanation, I realized that because the buoyancy of salt water is greater than that of clear water, the eggs will float up in salt water as if swimming.

Describe in detail an experiment with eggs.

Fill in the story with rhetorical devices.

For example, today I listened to the teacher talk about the Dead Sea, I originally thought that the Dead Sea refers to a very terrible sea, but the fact is that I guessed wrong, it turns out that the Dead Sea is because of the high salt content, which makes it impossible for organisms to survive, and people will lie on it and float, so people call such a sea the Dead Sea. I developed a strong interest in such a Dead Sea. When I got home from school, I started experimenting with salt.

The experiment on how eggs float can be written like this:

Today, I did an experiment, this experiment is to make eggs float, the materials are: eggs, water, salt.

I first put the egg in the water, the egg sank to the bottom of the cup like a stone, and remained motionless in the water, as if I was sleeping lazy, I picked up the egg, and as soon as I let go, it immediately sank, I tried several times, and the result was the same. After a while, I took the salt out and scooped it spoonful by spoon into the water and stirred.

One spoonful of salt, the egg did not move, two spoonful of salt, the egg still did not move, and he still slept under the cup, and when the third spoonful of salt, the egg seemed to wake up, and slowly floated up, and then, I wanted to press the egg down Duan Bi. I pressed in the east, pressed in the west, pressed hard, pressed hard, but no matter how I pressed him, he just couldn't go down.

What's going on? I immediately went to look for information, and after a period of hard work, I finally found the reason, it turned out that the reason why eggs can float is because a lot of salt is added to the water, and the density increases, which increases the buoyancy of the water. Through this one thing, I felt the greatness of science.

The upright upward force of the fluid on an object immersed in a fluid is called buoyancy and is held in the opposite direction of gravity.

The amount of buoyancy exerted by an object in a liquid is only related to the volume of the liquid it displaces and the density of the liquid, and has nothing to do with the density of the object itself, the state of motion, the depth of immersion in the liquid, and other factors. In water, objects that are denser than water will sink, such as stones and iron; Objects that are less dense than water will rise, as is the case with plastics, wood, and other liquids and gases.

For example, the ability of wood to float in water and the ability of a ship to sail in the sea are all contributions of buoyancy. Buoyancy** is the pressure difference between the upper and lower surfaces of an object, and the direction is opposite to gravity, which can be simply understood as follows: gravity pulls all objects that want to run back to the ground, while buoyancy helps objects to leave the ground.