If water has a color essay collection, if what has a color essay

The warm breeze of spring, the breeze of summer, the golden wind of autumn, the cold wind of winter, the wind, everywhere. It brings convenience to people, but it also brings disaster to people. When the wind sweeps over the earth, it always disappears, but one day, the wind that comes and goes without a trace suddenly has a color ......

In the morning, everyone went to school. On the road, the colorful wind wraps around us like a ribbon, and we feel like we have come to a dream country.

At noon, the weather is very clear, almost windless, and you can occasionally see green, blue, red, and yellow compositions.

The breeze caresses the grass and the national flag, and everyone thinks that it is really good that the wind has a color!

In the afternoon, things were very different. The winds are coming violently: winds of all colors are sweeping in, and these colored winds not only block people's views, block traffic lights, but also prevent people from traveling.

Visibility on every road is rapidly decreasing, and there are many traffic accidents on the road, and people are miserable. In the evening, things got a little better.

The colored wind seems to be really bad, as the saying goes: there are advantages and disadvantages. Colored winds, while they bring us pleasure, can also bring us disaster.

Today's ability class turned into an experimental class, because the teacher took us to do a thrilling and eye-opening experiment.

First, the teacher walked up to the podium and said, "Who can tell the story of the crow drinking water?" The students raised their hands.

The teacher called a classmate, and the classmate started talking, and at this moment, the teacher took out a beaker from the cabinet, and I was a little puzzled: is this a story meeting or an experimental class!

The teacher was so surprised to see us and hurriedly explained, "We are going to do an experiment in this ability class, which is to find out why crows can drink water. With that, she filled her beaker with water and asked us

If I put a paper clip, will the water overflow? Suddenly, the classmates accompanied by Tai Bu were talking. I don't think it will spill out because the paper clips are so small.

The teacher motioned for the students to be quiet, and for a moment, the whole class was silent, and even the sound of a needle could be heard. "Smack. The teacher put the paper clip in, and the students' eyes widened, and we only saw the paper clip dancing the ballet and sinking, but the water showed no sign of rising, and the whole class was amazed.

I can still pass on this magic to other students! The teacher blew the cowhide. "We don't believe it!

The class spoke in unison. The teacher didn't do it again, just called a classmate. After the classmate walked up to the podium, the teacher touched his hand and said:

I have answered the Sutra and passed on the magic to you! ”

Unexpectedly, the classmate threw ten paper clips in a row, all of which were in danger.

As she prepared to cast the fortieth paperclip, the hearts of the class were pounding, and their eyes were glued to the surface of the water for fear of overflowing. I saw that he was holding a paper clip in his hand, and put his hand five centimeters away from the beaker, and the paper clip was almost touching the water. With a ding, the paper clip was successfully thrown into the beaker, and the water in the beaker still did not spill out, and the class cheered in surprise again!

What's going on here? It turns out that water is composed of many water molecules, and there is an interactive force between the water molecules, which is called tension, and tension is to avoid the overflow of water.

This ability class not only brought me happiness, but also made me understand a scientific truth, I love this ability class!

If the wind has a color, if the wind has a color, I hope the wind is turquoise, because turquoise is the color of spring, it symbolizes life and peace, it revives all things, and adds some new hope to this year's harvest of the motherland.

During the May Day holiday, I went to the beach with my parents. It is really refreshing to see the magnificent sea and the endless blue. I ran to the beach as fast as I could, and I couldn't help but pick up a little bit of the sea with my hands.

If you look closely, no, why does the sea water in my hands become transparent, just like ordinary water. Look at the endless sea, yes! The sea is still so blue, so beautiful.

So I picked it up a little bit with my hand, and the sea water became colorless and transparent again, as if by magic.

Confused, I walked over to my father. "Daddy, how can the sea play tricks? It's blue there, but when I scoop it up a little bit it becomes colorless, what's going on?

Dad said, "I don't know, maybe it's because there's a lot of water in the sea!" "Will it turn blue if there is too much water?

How can colorless water turn blue? I still don't understand why. Dad couldn't have said a better explanation.

I had to put it aside for the time being.

When I got back to school, I couldn't wait to ask my science teacher. My science teacher told me, "No matter where we scoop a little bit of seawater in the ocean, we can see that it is colorless and transparent.

However, when we stand on the seashore and look at it, what we see is the boundless blue sea. It's not the sea that tricks it, it's the sun's skillful hand. After that, the teacher took out the experimental tools and used a small mirror to reflect the sunlight on the wall.

Ah, see, what a beautiful color, a beautiful rainbow appeared on the wall.

The teacher then explained to me: "Sunlight is composed of seven monochromatic lights: red, orange, yellow, green, blue, indigo, and violet. When these seven lights are together, no one can see them for what they really are, and they can only be identified when they run from one substance to another, or when they are scattered by very small obstacles.

The wavelength of the seven-color light varies, from red light to violet light, the wavelength gradually shortens, among which the red light, orange light and yellow light with long wavelength have strong penetrating ability and are most easily absorbed by water molecules. Blue light and violet light with short wavelengths have weak penetrating ability, and are most easily scattered and reflected when encountering pure seawater. And because people's eyes are very insensitive to violet light, they often turn a blind eye and are more sensitive to blue light.

As a result, the ocean we see takes on a blue or deep blue color. ”

After listening to the teacher's words, I finally understood that water is colorless, and the sea is blue because of the sun's rays! Later, I took a closer look at lakes and reservoirs and found that they had a similar phenomenon.