Composition observation of natural phenomena

Rain, thunder, rainbow and sunset are all natural phenomena. The following is a composition on observing natural phenomena compiled by me for your reference only. Welcome to read it. Observing natural phenomena (1)

One summer afternoon, the weather was very hot. My mother and I are walking home. The sky is overcast, and it looks like rain. We hurried home, and a rainstorm followed.

this rainstorm comes and goes quickly. After a while, the rain stopped and the sky cleared up again. I went out of the yard to feel the fresh air after the rain. Looking up from afar, I was surprised to find a rainbow hanging on the horizon. It's like an arched bridge. Strangely, it has a colorful light, just like several colorful ribbons put together. Why is there such a beautiful rainbow? With such doubts and joy, I hurried home to ask my mother for help. My mother told me that rainbows are a normal natural phenomenon after rain, and she suggested that I look for answers from books. So I found "1, Why". It turns out that rainbows are formed by small water droplets floating in the air reflecting sunlight. After a rainstorm, there are countless small water droplets floating in the air, which are like prisms. When sunlight passes through them, it is decomposed into seven bands of red, orange, yellow, green, cyan, blue and purple, and then reflected back, thus forming a rainbow. Ah, what an interesting nature, what a wonderful rainbow!

I closed my book and came to the yard again, but the rainbow was gone. I think those small water droplets like a prism are decreasing or dissipating. I looked at the sky where the rainbow once appeared and looked forward to the arrival of the next rainbow.

In the early morning of summer, I went to water the vegetable garden and found a few diamond-like water drops on the edge of cucumber leaves. You may say disapprovingly, "What's the big deal? No one has ever seen small drops of water on the leaves, and there are a lot of them after the rain." In fact, this is not a rain drop, but a dew drop. I also learned it by consulting my science teacher. This is a normal plant physiological phenomenon, called "water spitting phenomenon".

Later, the nature teacher lent me a copy of Wonderful Nature, only to know that the phenomenon of spitting water often occurs at night when the temperature is high and the water vapor in the air is close to saturation and there is no wind. Because the stomata on the leaves are generally closed at night, the amount of water emitted from the leaves is reduced, and the roots of plants still absorb water strongly because of the high humidity in the soil, which causes the water intake in plants to be greater than the evaporation consumption, and excessive water is discharged from the stomata at the tip or edge of leaves to form water droplets. If the temperature drops suddenly and the water vapor in the air gets cold, dew will be scattered on any part of the leaf surface!

they are also water droplets, but the reasons for their formation are quite different. Students, as long as we pay more attention to observing life, reading more books and consulting others, we will gain more knowledge. Observing natural phenomena (2)

There are many wonderful natural phenomena in nature, such as ants moving, spiders spinning webs and swallows flying low. However, the natural phenomenon I introduced today is quite special. Come into my composition and see what it is.

one day, I was having a PE class and I felt something was wrong with the sun. Just now, the bright sunshine has become much gentler. Just looking up at the sun, I was shocked by what I saw. The sun seems to be covered by a thin layer of dark clouds, which makes it look less dazzling. More importantly, a ring of light as beautiful as a rainbow appeared around the sun. Is this a rainbow? I said to myself. No, no, the rainbow is semicircular, and this one is round. Do we usually only see half of the rainbow? No, no, when we saw the rainbow, there was not a cloud in the sky. Besides, you can't see the rainbow until it's clear after the rain. I haven't even seen the shadow of the rain recently. It can't be a rainbow. I thought I couldn't get the answer. I ran to ask Mr. Li, the PE teacher, who said it was a black hole. I don't think it's that simple.

when I came home from school, I looked up the information online. It turns out that this ring of internal infrared purple formed around the sun is called solar halo. Solar halo is an atmospheric optical phenomenon. It is a light phenomenon formed by refraction when sunlight passes through ice crystals in clouds, which is colored. There are total halo and gap halo. What I saw should be total dizziness. There are also sunstroke and rain among the people. The saying that the moon is dizzy and the wind is at noon. It looks like rain today. I'm really looking forward to it.

There are many natural phenomena in nature, waiting for you and me to answer their secrets. Observing natural phenomena (3)

In the early morning of summer, I went to water the vegetable garden and found a few diamond-like drops of water on the edge of cucumber leaves. You may say disapprovingly, "What's the big deal? No one has ever seen small drops of water on the leaves, and there are a lot of them after the rain." In fact, this is not a rain drop, but a dew drop. I also learned it by consulting my science teacher. This is a normal plant physiological phenomenon, called "water spitting phenomenon".

Later, the nature teacher lent me a copy of Wonderful Nature, only to know that the phenomenon of spitting water often occurs at night when the temperature is high and the water vapor in the air is close to saturation and there is no wind. Because the stomata on the leaves are generally closed at night, the amount of water emitted from the leaves is reduced, and the roots of plants still absorb water strongly because of the high humidity in the soil, which causes the water intake in plants to be greater than the evaporation consumption, and excessive water is discharged from the stomata at the tip or edge of leaves to form water droplets. If the temperature drops suddenly and the water vapor in the air gets cold, dew will be scattered on any part of the leaf surface!

they are also water droplets, but the reasons for their formation are quite different. Students, as long as we pay more attention to observing life, reading more books and consulting others, we will gain more knowledge. The composition observes natural phenomena (4)

In nature, some birds are singing and flowers are fragrant, and the spring is beautiful; Some xiao-he is sharp and scorching in the hot sun; Some are fruitful, and the autumn wind is cool; Some are snowing heavily and the wind is biting. Nowadays, Miss Winter has quietly replaced the sentimental Miss Autumn and walked towards us. < P > In the early morning, I went for a walk with my mother in the Nature Park. Wow! Look, the frost makes the grass white everywhere, like a large cotton blanket spread on a large piece of grass for fear of catching cold.

when you look closer, the frost is like snow, crystal clear, snow-white, shining with golden light in the morning sun, especially beautiful. My little hand couldn't help touching it gently, and I felt cold, but the frost seemed shy and disappeared. The nose couldn't help but gather together, and a cool breeze sucked in. Suddenly, the whole person was relaxed, just like a golden cicada that had taken off its shell. I couldn't help licking the tip of my tongue. It looked like a tasteless ice cream and a cool white Dan.

Although there is no heavy snow here, the boundless frost really adds a bit of ice crystal world to the park!

how is this beautiful and cool cream formed?

When I consulted the Encyclopedia, I found the following results:

When warm air comes into contact with the surface of a cold object, the air will cool down, and when the water vapor is supersaturated, the excess water vapor will be precipitated. If the temperature is below ℃, the excess water vapor condenses into crystal on the surface of the object, which is frost.

the frost will melt after the sun rises, but it can last all day in cold weather or in shady places.

besides frost, there are other beautiful natural phenomena, waiting for you to walk into nature and observe carefully, and endless mysteries are waiting for you to explore! Observing natural phenomena (5)

Sunset, bright moon and stars ... are all beautiful. How many writers and poets have described them in the most beautiful language, but I was deeply attracted by the unpredictable sunset glow.

It was a sunny evening. I had dinner, stood on the balcony and looked up at the sky. Suddenly, a hongxia appeared on the horizon, and the scope of hongxia gradually expanded, one second, two seconds ... Suddenly, hongxia and hongxia dyed the western sky red.

I watched intently, and two white clouds appeared in the sky. But in an instant, they were dyed red by the glow, and they moved forward, getting closer and closer to me. Ah! Of these two clouds, the first one looks like a sly fox, and isn't it a ferocious tiger that follows? Looking at the scene in the sky, I can't help but think of the fable "Smith". I really feel funny. In a short time, they all disappeared.

In front of my eyes, I saw a very interesting picture: a lively and lovely little white rabbit, eating grass carefree. Suddenly, it seemed to hear something. Oh, there was a tall hunter standing behind it. Look! He still has a hunting gun in his hand! The rabbit pricked up its sensitive long ears and ran quickly forward. The hunter followed. In the blink of an eye, the rabbit disappeared into the thick clouds, and the hunter didn't know where to go.

I looked at it, and my eyes blurred. When I looked up at the sky again, I saw the sky was "dusty", and countless fierce horses dyed red by the sunset rushed forward. As the clouds moved, I seemed to hear the sound of their galloping. This picture of Wan Ma Benteng is so wonderful that no painter can describe it.

I was in a trance for a moment, and I couldn't see anything clearly. The sunset glow won't stay in the sky forever. It converges the last glow and disappears. I just stood there.