Seven secrets of spiders

Article 1: The secret of the little spider is 400 words.

There is a little spider in my home. It usually only weaves the net every morning.

Because it is summer, there are many flies and moths flying in, so the little spider can have a full meal when she weaves the web. But I found that whenever it preys, as long as there is a prey stuck on the internet, it is not in a hurry to eat it all at once, but spits out what is in its mouth and waits for it to soften slowly before eating those bugs.

Why do spiders know every time their prey gets stuck? Why don't spiders get stuck in their own webs?

In order to find out these two problems, I did two experiments. I put a dead locust on the internet, and the little spider didn't notice it at all. I used a toothpick to cause vibration, and the little spider soon vomited. It turns out that spiders catch food through the vibration of their webs.

One day, my partner and I went to play in the grass and suddenly found a spider mending the net. "Let's see who shot down that spider first!" "Say that finish, we will go all out to jump up. After our "strong attack", the spider web finally failed to support. After a while, the spider fell into a small puddle, and I touched it, as slippery as lime powder. It turns out that the spider can't walk because it has a special oil!

This is the secret of spiders, isn't it amazing?

Chapter 2: The Secret of Spider 600 Miss Chun breathed a sigh of relief to the world, and the scene between heaven and earth began to become full of vitality!

I followed her footsteps to the big tree and found that the branches of the big tree had drawn new green buds. I leaned against the trunk to enjoy the cool, and suddenly I found an unexpected guest among the branches-a spider I had never seen before. I saw its slender feet, like a beautiful girl knitting a sweater. Blink of an eye, I saw a bug accidentally fall into the net, flapping its wings and struggling desperately on the net. No matter how hard I try, it's a pity that I'm still stuck in the net. Seeing that the "woman" felt the violent shaking, she paddled her long feet excitedly and slowly came to the bug. The bug looked at the "woman" in fear, as if begging it to say, "Please leave me alone! Please don't eat me! " But "women" obviously won't leave it at that. It walked towards the bug with long legs, as if it were going to win. Soon, the "woman" began to enjoy its delicious lunch!

To my surprise, this bug had nowhere to escape, so when I got home, I couldn't wait to look for it online ... Ah! I saw it! It turns out that the silk spit out by the "woman" is blue and extremely soft and sticky. Once a small insect is accidentally caught, it will be born to die. The "woman" preys on its hard-woven net: she sometimes sits in the middle of the net, sometimes finds a hidden place to sleep leisurely, waits for her prey to surf the internet, and then enjoys a good meal leisurely. You will feel that the life of a woman is too easy. In fact, it must maintain its "network" regularly!

I thought to myself: the ancestors of spiders were originally vegetarian, right? Only one day, a small flying insect happened to fall from the sky. The spider tasted it and found that its net can not only be used as a hammock, but also the insects it preys on are delicious, so it changed its taste and ate it up from now on!

Through my little discovery, it seems that spiders are not so terrible. Its behavior is also very interesting, and its predation process is even more amazing to me! I hope these "women" can catch more pests, especially those annoying mosquitoes, and make our life more comfortable and beautiful!

Chapter 3: I discovered the secret of spider foraging. The 300-character spider's skin is dark and unremarkable in life, but its web is eye-catching.

One Sunday, I was going to my grandmother's house after breakfast. I just went out and passed the big tree in front of the door, and was covered by a big white net. I wonder in my heart: huh? When did this guy settle here? Was it last night? What is the purpose of weaving this big white net? This series of questions rolled back and forth in my mind, and finally I decided to observe King Dabai carefully.

I brought a chair, a pen and a notebook. Hehe, I'm going to observe spiders and record them. First of all, Dabai.com was still "calm" and nothing happened after a long time. Suddenly, a small mosquito illegally "invaded" and moved around the internet, but the struggle of the mosquito was of no help because of the sticky white net.

After a while, an Okumo swaggered to the place where there were mosquitoes. In a blink of an eye, a mosquito has become the food in the spider's mouth, and the spider is also a sumptuous meal this time. Oh, it turns out that spiders weave big white nets to catch insects for food!

Ha ha! This is how spiders eat.

Chapter 4: The Big Secret of Little Spider: 500 words

In our life, there are many profound scientific mysteries waiting for us to explore, study and uncover.

One day in the summer vacation, I went to play in my grandparents' new house. After finishing my homework, I went to play in the former yard, where there were many cobwebs. After playing for a while, my grandmother kindly said to me, "It's going to rain soon. Let's go back to the new house! " "I wondered: How did Grandma know it was going to rain soon? It rained cats and dogs not long after I came here. I'm even more surprised How can my grandmother be so unpredictable? I asked, "Grandma, how did you know it was going to rain?" "You will find the answer if you look at the spider web carefully." Grandma answered kindly.

I'm even more surprised to hear this: What's the relationship between observing cobwebs and knowing it's going to rain? I decided to solve the mystery in my heart and observe cobwebs every day. I observed it for several days and found nothing. I'm really a little discouraged. But thinking of the indomitable spirit of some scientists, I suddenly became more confident and decided to continue to observe until the truth came out.

One day, I found that the spider left the horizontal net and went to other places to weave the vertical net. After the rain, I went to observe again and found that the horizontal net had been washed away by the rain, but the vertical net was intact. I thought: Why do spiders leave the horizontal web to weave the vertical web? It must be related to the rain!

I can't wait to go back to my new home, rummaging through the information in my bedroom, and finally find the answer in the book "100,000 Why". It turns out that once it rains, the spider can feel it, and it will climb away from the horizontal net to weave the vertical net. Because when it rains, the horizontal net will be washed away by the rain and the hunting tools will be lost, so it will be moved to other places to weave the vertical net.

I finally understood the spider's web and the mystery of early rain. I really admire the sensitivity of spiders! Ah, nature is really interesting. I will continue to observe. In this way, you will certainly gain a lot of knowledge!

Chapter 5: The secret of spider's web: 300 words

This afternoon, when I came home from school, I was surprised to find a spider with thin waist and thighs weaving a web on my balcony. At this time, I became curious about Okumo and observed it carefully. I saw the top of the silk stuck to a hook on the balcony ceiling, and the spider was hung in the air by a soft filament. 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 huge question mark suddenly appeared in my mind-will it rain as soon as the spider spins a web?

So, with this question worth thinking about, I observed the spider for a long time. Through observation, we know that every time before it rains, spiders are doing the same job-weaving webs.

Looking at this scene, I fell into deep thought. Why does it rain as soon as spiders spin webs? So I opened the book "100,000 Why" to find the answer. It turns out that the silk spit by spiders is made up of some microorganisms. This microorganism can't be distributed in sunny days, but it can quickly condense into silk when it rains. This is why spiders weave webs after it rains.

I suddenly understood that spiders are not only beneficial insects, but also "meteorologists".

Chapter 6: 550 words about the secret of spider spinning.

There are many mysteries in nature, waiting for us to discover and explore. Many mysteries are obtained from books. However, this real experience made me feel the joy and excitement of personal discovery.

We should all know that a hunting spider often appears in the bushes or under the eaves. They can weave nets to catch small insects. But what puzzles me is: how do spiders spin silk? Where does it spin silk?

In order to find the answer, I began to do experiments with my own hands. First, I caught two spiders and put them in two paper cups. The cups are wrapped in cards, and a few small holes are poked to ensure oxygen supply, so that they are temporarily deprived of food and hungry all day.

The experiment officially began the next day. First, I poured one of the spiders out and put it on a glass plate, wrapped the second half of it with scraps of paper, and then released the small insects I caught in advance as bait. I want to induce spiders to spin silk in this way. Sure enough, in a short time, I found that one spider began to spin, while the other spider didn't respond. I immediately pointed a magnifying glass at the spider and found that the spider's tail spit out silk. So I looked it up. It turns out that there are six kinds of glands in the abdomen of spiders. Known as spinneret, also known as "textile machine", there are thousands of small holes on it. Spider silk flows out of the small hole in the textile machine. It is sticky "glue" when it just flows out, but the sprayed liquid condenses into spider silk with strong viscosity and great tension when it meets air. It is said that 1000 silk thread is one tenth thinner than human hair after fusion. Spider silk consists of a fibroin. For a specific diameter, the tensile strength of spider silk is greater than that of steel.

Many secrets of nature have been discovered by human beings. In the past, I learned many secrets of nature in books, but I am still not impressed. Today, this little spider spinning experiment made me feel the pleasure of exploring the mysteries of science.

Chapter 7: I discovered the secret that spiders eat 450 words.

"alas!" I sat on the balcony and sighed, because my mother scolded me today for not washing a lot of clothes and playing. Accidentally caught a glimpse of a "network". A small moth is fighting with a small spider. I observed it carefully, and my troubles were immediately thrown out of my mind.

After more than ten minutes, the moth was exhausted. The little spider swooped in and bit the moth's abdomen. The moth struggled a few times and then stopped. I saw the little spider quickly wrapped the trophy with spider silk and went back to the cave to rest. I thought: why doesn't the spider eat its trophy right away? Aren't you hungry now? I went back to my room with this question.

The next day, I came to the balcony again and found an empty shell on the Internet. Hey, why don't spiders eat the shells of their prey? Little spiders don't like to eat shells? I walked away with this question.

On the third day, I found that the little spider caught another fly. It bit its prey, injected a liquid into its body, and then returned to the cave. I immediately grabbed my mobile phone from my mother and checked it online. Oh! It suddenly dawned on me that the liquid injected into the prey by spiders can melt the nutrients in the prey into liquid, and then slowly suck it, so that's it! I used to think spiders didn't like to eat shells! Hahaha! Later, I checked some knowledge about spiders with my mobile phone and realized that spiders are still beneficial insects!

Although spiders are ugly, they also have a beautiful and kind side. Spider's perseverance and meticulous spirit in weaving webs are worth learning from all of us.