The secret composition of spiders

In our daily life, we always touch or use composition. Composition is a narrative way in which people express the relevant knowledge, experience and thoughts stored in memory in written form. You always have no way to write a composition? The following is the secret composition of spiders I collected for your reference, hoping to help friends in need.

The secret composition of spiders 1 There is a little spider at the corner of my corridor. Although small, but the ability is great! It weaves a big and beautiful net to catch flies, mosquitoes, moths and other pests to fill its stomach.

One day, I found that cobwebs can only stick to small pests. Why can't they stick to themselves? So I asked my father, "My good father, can you tell me why cobwebs only stick to small pests and not to themselves?" Dad replied: "this question is actually very simple, because there is pulp in the liver of the little spider, so when the little spider weaves a web, it will spit out the pulp, and the pulp will become thin and sticky when it meets the air." So other bugs can't run away once they touch them. Moreover, the spider's body and legs will secrete a layer of oil, and the sticky silk will not stick to the oil, so the spider will not be stuck. "After listening to my father's words, I asked curiously," Dad, how do you know so much truth? "Dad said," I don't know anything. This knowledge is accumulated by reading books. Just as we love science, reading books can tell our parents something we don't know! "

Yes! The world is so big, there is still a lot of knowledge that we don't know, so I will study hard, use my brains and read more books to make myself understand more!

When I came home from school this afternoon, I was surprised to find a spider with a big waist and a thin waist. So, I approached and took a closer look. I saw the spider hanging in the air by a soft filament, the top of which was hanging in the air, and the bottom of which was connected with a small hole under the spider's stomach. When the eight paws kept paddling, the silk thread continued to extend.

Watching, the sky suddenly began to rain. I looked at the sky, and then at the spider weaving a web. I was very curious. A question popped up in my mind, did it rain as soon as the spider spun the web?

A big question mark appeared before my eyes. So, with this question worth thinking about, I observed the spider for a long time. I stared at this guy for a long time. Through observation, we know that every time before it rains, spiders always look at their work-weaving webs.

Looking at this scene, I fell into deep thought. Why does it rain when spiders weave webs? So I opened the book "100,000 Why" to find the answer. It turns out that the silk spit out by spiders can condense into silk at a very late speed, so spiders really weave webs before and after it rains.

It suddenly dawned on me that spiders are not only beneficial insects, but also "weathermen".

Spider's Secret Composition 3 There are many profound scientific mysteries hidden in our lives, in ordinary days and in everything in the world, and these scientific mysteries are waiting for us to discover! The following are the new knowledge and discoveries I gained through careful observation.

One day, I finished my homework and went to play in the yard. There were many cobwebs in the yard. But just after I played for a while, my mother kindly said to me, "Son, it's going to rain soon. Come into the house quickly. " I looked puzzled and thought: How can it rain on such a sunny day? Soon, it began to rain cats and dogs. Why is mom so unpredictable? So I asked my mother, "How did you know it was going to rain?" Mom smiled and said, "You only need to observe the cobwebs carefully for a period of time, and you will find the answer you want.

After listening to this, I thought disdainfully: What is there to observe in cobwebs? But in order to know my mother's unpredictable mystery, I went to observe the cobwebs. I didn't get an answer for several days. Just when I was about to give up, my mother told me, "Son, you must persevere in doing things, don't give up halfway." Suddenly one day, I found that the spider left the original horizontal web and went to other places to weave vertical webs. After a while, it really began to rain. After the rain stopped, I continued to observe: I found that the horizontal web of the spider had been washed away by the rain, but the vertical web was intact. I thought at that time: Does the spider throw away the horizontal net and weave the vertical net have anything to do with the rain?

I hurried back to my room to check the information. It turned out that the spider felt it before it rained, so it climbed away from the horizontal net. Because when it rains, the horizontal net will be washed away by the rain, so the predation tools are lost, so the position is shifted and the vertical net is woven.

I finally understand the relationship between spider webs and rain. I really admire the sensitivity of spiders. I think I will continue to observe the dribs and drabs in my life and will certainly gain more new knowledge! Little friends, come and observe with me!

I found many secrets, but what I gained the most was the secret of spiders.

One day in the summer vacation, I was coming back from a cram school. Suddenly I saw a spider web in the corner, and I watched it carefully. After observing for a long time, I couldn't see the spider coming out, so I found an ant and put it on it. The ants struggled desperately and the cobwebs trembled. After a while, a black spider came out. It crawled slowly towards the ants, as if to taste delicious food slowly. It slowly spits white silk on the ant, entangles the ant's body, and then slowly crawls away.

The next day I came to the net again, and I stared at the ant with only one shell left in surprise. My mind immediately flashed two questions:

1: How do spiders eat ants?

2: Why is there only one shell left?

I started looking for information when I got home. It turns out that when a spider finds food falling into a trap, it first entangles its prey with spider silk, making it unable to move. Then a digestive juice called an enzyme is injected into the prey, so that the cavity containing protein in the prey is melted, and finally it is exhaled and sucked out. Because there is no protein in the ant's shell, the spider left the shell on the net. Just like when we eat fish, we have to spit out the bones.

In fact, there are many things in life that we can discover, but you haven't observed them carefully. Believe in yourself, as long as you observe carefully, you will find the secrets of nature.

One morning, I was sitting in the yard reading a book. Looking up unintentionally, I suddenly saw a spider weaving a web. I was curious, so I moved my chair closer to see how it weaves a web.

I saw that the spider was agile, and climbed to this branch for a while, and then landed on that branch, spitting out silvery white silk. In a short time, a spider's web in Zhang greatly was ready. Then, it climbed to the net and squatted down, as if waiting for the prey to bite.

Sure enough, a reckless little flying insect buzzed past and bumped into a spider web. The little flying bug struggled and resisted desperately, but nothing helped. Just then, the spider swaggered out, as if to say, "Hey hey, I can have a full meal today!" " "Say that finish, it began to eat quickly, as if someone was fighting with it. After a while, the spider returned to its position, but the little flying bug was still there. Why doesn't it eat? I found a wire and poked the little flying bug. Ah, there are only empty shells left! How did this happen? Why don't spiders get stuck?

With questions, I looked up the information on the Internet. It turns out that there is a layer of oil on the spider's feet, which can prevent the spider from getting stuck. Spiders spit out venom and turn the dead bodies of flying insects into liquid. Spiders can suck these delicious juices in big mouthfuls, while the empty shells outside are left behind because they cannot be decomposed.

I thought to myself: spiders are really a wonderful creature.

I'm afraid of spiders, but what happened today made me not afraid of spiders. Do you want to know why? Look down!

I found an uninvited guest dressed in black at home today. Take a closer look, ah! It turned out to be "Mr. Skinny Leg"! Mr stovepipe has six long thin black legs, with a big black belly in the middle and a small black head on the big black belly. He bared his teeth and looked fierce. It hangs on a thin spider silk. One end of spider silk sticks to a leaf, and the other end is under the spider's abdomen. As the spider moves down, the spider silk becomes longer and longer. I think I just started working.

I shouted in fear: "Ah! Ah! Ah-",then my father came over and said," Don't be afraid of spiders, but there are great secrets hidden in its small body. " Then, my father gave me a magnifying glass to observe spiders.

When I started to observe with a magnifying glass, it was already in the corner of my house. Mr. stovepipe drew his bow left and right, and the more he vomited, the denser the net became. His footsteps dazzled me, as if to weave the net "seamlessly".

I watched it for a while, only to see a mosquito seem to be "racing", rushing to the spider web quickly, but when it was near, it was a pity that it suddenly braked and flew to the right.

After a while, a medium-sized mosquito flew over and went straight to the spider web, without any intention of flying in other directions. I thought to myself, "well, it depends on how you escape!" " "Sure enough, the mosquito was caught. Mr stovepipe touched the mosquito a few times with his two front legs, and the mosquito stopped moving. Dad told me that the front legs of spiders are like anesthesia needles, paralyzing mosquitoes. Watching Mr. Long Legs eat, I couldn't hold back my excitement, applauded it and killed my most annoying mosquito. I won't be bitten again!

Today, I finally discovered the secret of spiders. As long as we observe carefully, we will find that everything has its loveliness.

There is an Okumo in the corner of our community, which you will see every morning when you go to school. Sometimes, I say hello to it, and slowly, I become its good friend.

I found that spiders have eight legs and weave webs very fast. I thought: Spiders only have eight legs, how can they weave so fast? I came to the library with curiosity, and then I realized that spiders' legs have seven joints, so they can weave quickly. When I got home, I told my father what I had gained today. My father asked me to have another look at it in the evening.

I went to that corner in the evening, because it was summer and there were more flies. I see spiders eating. I took a closer look and it turned out that it was eating flies. When eating, you will "anesthetize" the flies before eating. Spiders are too clever.

But then I thought, how can spiders eat such a big fly? For this question, I went to ask my father again. My father didn't know much about animals, but I didn't give up. I searched it online myself. Only then did I understand that when a spider comes to a small insect, it will spit out a mucus in the abdominal cavity, which will condense into silk when it meets air or substances, and then stick the silk to the activity place of its prey with its two feet on its back, and go back and forth several times to make sure that it will not struggle before biting it bit by bit with its mouth.

Today, through observation, I learned many secrets of spiders. I am very happy. I will observe things around me more in the future.

I read an article in a book that spiders hang their webs vertically when it rains.

That night, my mother and I went out to eat. I had nothing to do, so I ran to the window to see something. Unexpectedly, I saw a spider hanging vertically with a net. I was so happy that I ran to tell my mother that it was going to rain. Mom just sighed and didn't seem to believe it.

After a while, have a good meal. When I left, my mother accidentally found it raining outside. When I got home, it was raining hard. My mother said, "Son, how did you know it was going to rain?" I told my mother, and her mother said, "Isn't that great? I have read books and learned knowledge, and I will do so in the future. " I followed my mother's example and sighed. Ha ha! I seem to have read this article on the Internet or in a book. I strongly recommend this article. Although my diary is short, it contains a lot of knowledge. When it doesn't rain in the future, you can look at the spider web, and you will find something unexpected!

Spider's Secret Composition 9 Everyone has a secret in his heart. In a small corner of my heart, there is also a secret of mine.

On Thursday, it is our group's turn to be on duty. Because I arrived too late in the morning, I was willing to wait until the afternoon to clean up. When I arrived at school in the afternoon, I went upstairs to get a broom. I ran down the stairs at a sprint speed of 100 meters, and then ran to the sanitary area at a very fast speed. Because I ran too fast, the leader said, "It's clean enough. Let's all go up." After listening to this sentence, all the other students went up one after another. Seeing this situation, I had to be depressed. I didn't sweep the floor in the morning and afternoon. What if the teacher finds out? My heart became anxious at the thought of this.

At the class meeting on Friday, the teacher said, "This week, the fourth group finished the task quickly and cleanly." After the teacher praised us, it was my encouragement that made everyone in our group get a smart bean. However, I am not on duty. Am I going or not? At this time, there will be two kinds of ideas in my heart, and I will struggle between these two choices. Finally, I was lucky to get smart beans.

The big stone that weighed on my heart finally fell. It made me understand: never take chances, it will only benefit you!

Spider's Secret Composition 10 Spider is a well-known monster with eight legs and eight eyes. Speaking of spiders, I am curious. Why does it have eight legs and doesn't trip when walking? How can you weave such a big net with such a small stomach?

One day on my way to school, I increased my suspicion of spiders and my mystery about them. Looking at the distant scenery, I accidentally found a spider web on the book, criss-crossing, like many polygons connected in series. After weaving a web, the spider will find an inconspicuous place to rest and wait for its prey to appear. I am familiar with cobwebs. Every time I walk, I get a little more silk on my face

The spider web suddenly shook a few times, and I found a butterfly stuck on it. It flapped its wings and struggled, not knowing that it had become a delicacy on the table. Look at these beautiful wings. That's a real pity. At this time, the spider climbed out of the darkness and walked flexibly to its prey. I can't help being surprised. Butterflies only have the strength to struggle on the line, but little spiders can walk easily. Why on earth?

I couldn't restrain my curiosity and looked up the information. It turns out that spiders can weave two kinds of silk threads, sticky and non-sticky, while the radial skeleton silk threads on spider webs are strong, but not sticky. The spiral silk threads (horizontal silk threads) on the spider web are extremely sticky. When spiders are active on the Internet, they will choose vertical clues. In case they encounter sticky horizontal lines, spiders will secrete an oily substance and put it on their feet so that they won't be stuck.

The mystery that spiders can't stick to the web was finally solved, and I also discovered the secret of spiders.

The secret composition of spiders 1 1 One day, I found a spider's web on the telephone pole next to grandma's house. The owner of that net has a pair of big eyes, many fine hairs and six slender legs, so he preys on the king spider.

Although the spider is not very beautiful, its silk is sticky. You can easily catch food.

It often circles around the telephone pole, and when it is tired, it will hide in a less conspicuous place to rest. Waiting for the arrival of food.

Soon, a food was delivered to the door. It was a mosquito. It flies lightly, and the spider seems to say, "How can I fly easily with the last food?" Without saying anything, the mosquito stuck on the internet was very sad. The spider struggled and said, "I had a hard time catching you." How can I let you go easily? " . ? At this time, the spider swaggered past, but the spider did not eat it directly, but softened the mosquito with something called mucus, and then swallowed its trophy-mosquito in one gulp.

I have known since I was a child that spiders use webs to catch food. Why can spiders crawl freely on the Internet?

One day, my grandma's friends and I went to catch dragonflies. First, find a stick several meters long, and then wrap it in a circle with steel wire. They and I will get some spider silk. Suddenly I saw a net. I haven't got it off for a long time. I hit it hard and the spider fell. I touched it with my hand. It turns out that spiders have some talcum powder on them. I suddenly understood that it is not sticky because it has a special oil quality.

As long as you are good at observing and discovering, you will certainly discover the secrets of nature.

I finally know the secret of spiders.

The secret composition of spiders 12 One weekend, I was playing alone downstairs and happened to see a spider with a thick waist and thin legs weaving a web. I saw a spider hanging in the air, the other end of the silk hanging on the tree, its eight feet constantly swinging, and the silk spit out from its tail constantly extending. I began to wonder about this spider. So I quietly stepped forward to observe carefully. In a short time, a transparent octagonal net was woven. I saw the spider look around the net, climb to the center of the net again, sit up, like a commanding general, sit firmly in the camp, waiting for the arrival of prey.

Look, look, there are a few drops of rain floating in the sky. It began to rain soon. I thought to myself, "Why did it rain just after the spider finished weaving the web?" A big question mark appears in your mind. With this question, I made a special observation on this spider. I go upstairs and downstairs to observe this guy every day. Through observation, I found that every time it rains, the spider will start its work-weaving a web.

Why do spiders always weave their webs before it rains? With this puzzling question, I opened the complete answer of Roasted Goose Encyclopedia, and finally understood that the silk spit out by spiders is composed of some microorganisms, which can't be emitted in sunny days, and can quickly condense into silk only in rainy days with humid air. So spiders always weave their webs before and after it rains.

I didn't expect spider to be a "weatherman"!

The Spider's Secret Composition 13 Tomb-Sweeping Day has arrived, and our family is going to visit the cemetery on this warm spring day in bloom. Between the two pine and cypress trees beside the tombstone, I saw a spider web.

After careful observation, I found that there was a small bug dying on the spider web. I must have accidentally stuck it on the spider web. At this time, a spider crawled slowly from the oblique angle of the worm, wrapped the worm with spider silk, and then returned according to the route just now. I thought to myself: I must be full or tired. Go back to rest. However, why can't spiders get caught by themselves, and worms get caught by nets?

When I got home, I couldn't wait to turn on the computer to inquire about information. It turns out that the spider has a lot of silk pulp in its stomach and small holes at the end. When weaving a net. It sprays silk pulp, which condenses into thin silk threads when it meets air, and it uses these silk threads to make a web. These ribbons are so sticky that no matter what flying insects touch the net, they can't escape. Spiders often secrete a layer of oil on their bodies and legs. Sticking silk does not stick to oil, but generally insects do not have this layer of oil, so spider webs can stick to flying insects, but not to spiders. No wonder spiders can walk freely on cobwebs without getting stuck.

I found the answer to cobweb. In fact, there are still many puzzles in life. We should observe more, record more, think more, and look for more information so that the puzzles can be answered as soon as possible.

The spider's secret composition 14 It's cloudy today, and it's going to rain. After coming home from school, I hurried back to the balcony to see how my cactus grew. However, on the balcony, it was not a cactus, but a fat-bellied, thin-waisted spider swaying in the air. Hey, that's amazing. How can spiders walk in the air? When I looked carefully, it turned out to be walking!

It began to climb again, and then spun silk from the tail, pressed on the vertical line, and circled several times, and a spider web was made. Just when I was fascinated, some rain fell from the sky unnoticed, like a giant pouring water into a leaking gray cloth and turning it into rain from the sky. Hey, can spiders spin webs before it rains? A "big question mark" appeared in my mind. Isn't it? Just do an experiment.

When the sun shone on my balcony, I caught the spider and let it out. But it went on strike and slept lazily there. When it rains, it is diligent and weaves the net bit by bit. At this time, I came to a conclusion that spiders don't weave webs on sunny days, but on rainy days. However, why do spiders weave webs in rainy days? A "question mark" disappears and another "question mark" comes again. Finally, I checked "100,000 Why". It turns out that the spider's web is made up of its food, and its food is insects such as mosquitoes. This insect has all kinds of microorganisms, which can't solidify in the sun, but melt quickly. On rainy days, a spider web can not only solidify, but also be more sticky.

Wow, spiders are also weathermen. How wonderful nature is!

Spider's Secret Composition 15 It's cloudy today, and it's going to rain. I hurried home from school. Before entering the house, he was attracted by a spider with a big belly and a thin waist. He saw it swinging in the air. Hey, wait. Devil Now, how can a spider go into space? Look carefully. There is a net on the wall of my house.

The owner of this net is a big-bellied spider. You walked a tightrope in the performance. From one end to the other, it squirts a thin silver line from its tail when climbing, and then presses it on the vertical line for several times. In a short time, you can weave a crisscross and exquisite net, just like the tight encirclement used by fairies in fairy tales. Watching, the fly kept flying aimlessly, just hitting the big net that stuck immediately, so the big-bellied spider could have a good meal.

A few days later, I found that the spider on the wall seemed to get smaller. Abdominal spiders are walking around the internet. I leaned over curiously and observed the spider eating the web. "Why do spiders eat their own nests?" I have a question in my mind. In order to find out what medicine is sold in the gourd, I immediately found a thick book "100,000 Why". It turns out that there is mucus in the spider web. If the mucus dries, the flying insects won't stick. So spiders eat old webs and spit out new ones to weave.

I finally discovered the secret of spiders and felt very happy.