life quotinteresting trivia quot 1. life science general knowledge

A long-lived book if the book's cover has been curled upward phenomenon, it is because of humidity in the air in the constant change caused by; because the book's paper absorbs water in the air, when the air becomes drier, it begins to "evaporate water" and start absorbing water. It began to "evaporate water", humidity in the air and began to absorb water, so that the continuous absorption and evaporation of water is easy to cause the paper fiber "deformation", so the paper will be curled upward Leveraging principles.

The use of the principle of leverage is not just to save energy, in the use of chopsticks, it does not save energy, but save the distance, so that the manipulation is more flexible, but it is costly (the cost of the force does not matter ah). The power and resistance of a lever refer to the force on the lever, the power being the force of the fingers on the chopsticks, and the resistance being the force of the dish on the chopsticks.

Determine the relationship between the power arm and resistance arm of the lever chopsticks, you need to find the fulcrum, fulcrum in the upper end of the chopsticks, the power arm is smaller than the resistance arm, chopsticks is a laborious lever. Both are effort levers.

Because the place to pinch the food are at the head of the chopsticks. You can take the chopsticks and feel it.

Its fulcrum should be in the tiger's mouth (index finger and thumb connected), the power is the finger on the chopsticks force, generally in the chopsticks above and below the midpoint (even if you are very down to take, can not be to the head of the chopsticks, right). Resistance is the force that prevents the chopsticks from coming together, and is generally found at the head of the chopsticks.

(Unless you put the dish alone at the center, but that wouldn't be normal use.) So it's a lever with a power arm that's smaller than the resistance arm, and it's a labor-intensive lever. Different people hold the chopsticks in different positions, which can cause different levels of effort, but they are all effort levers.

2. Interesting Life Knowledge Questions, Multiple Choice Questions

Commonly Used Terms of Endearment in Life

Please say please, please correct the article, please correct the article

Congratulate someone, congratulate him, congratulate him, congratulate him on the age of the old man, say he has a long life

Visit someone, visit them, give them a gift, give them a gift, say you will accept it

Give them a photo, give them a photo, give them a photo, give them a photo, welcome to them, say they will buy them

I hope to take care of them, but I don't think they are going to.

Accompanying friends to say accompanied, halfway out of the meeting to say Excuse me

Asking for help to say Laojiao, please point out to say enlightenment

3.Life Knowledge

Daily life and health of the knowledge of the book - life knowledge tips. Can not not look at the life of common sense, life of common sense in a small place, the benefit is endless, the small things in life often can bring us unexpected results. Very useful 425 common sense life, I believe everyone can be useful.

1, clever use of toothpaste: If there is a small area of skin damage or burns, scalds, smear a little toothpaste, can immediately stop bleeding and pain, but also to prevent infection, the effect is quite good.

2, in addition to the screen grease: laundry detergent, smoking the rest of the cigarette together in the water, to be dissolved, and then brought to wipe the glass windows, screens, the effect is good.

3, the shrimp into the bowl, add a little salt, edible alkali powder, rubbed by hand for a while and then soak in water, and then wash with water, so that the fried shrimp transparent as crystal, tender and delicious

4, and dumpling noodle tips: 6 egg whites mixed in 1 pound of flour, so that the face of the protein increase, packaged dumplings in the pot after the proteins will quickly coagulate contraction, dumplings, dumplings, dumplings, dumplings, dumplings, dumplings, and dumplings, dumplings, and dumplings. After the pot to collect water quickly, not easy to stick

5, the residual tea leaves into the water a few days later, poured on the roots of plants, can promote plant growth; the residual tea leaves drying, put into the toilet or ditch burning smoked, you can eliminate the stench, with the function of repelling mosquitoes and flies.

4. Interesting trivia

Physics interesting trivia "- will change the" weight "in the study of physical knowledge, students may know that the weight of the object itself is not static, that sometimes

These are the first time I've ever seen an object with a weight that is not constant, that is, sometimes it is "weightless"; sometimes it is "overweight".

What exactly is the cause of the change in the weight of the object? Don't worry, let's look at the following story: once upon a time, there was such a thing: a businessman to the Dutch fishermen to buy 5000 tons of mackerel, loaded on the ship, from the Netherlands to a city near the equator of the African city - the seaport of Maga. When he got there, he weighed the mackerel and found that it was almost 19 tons short.

Strange! Where did it go? Stolen is impossible, because the ship did not dock along the way. At the time, no one was able to unravel this secret, but now we finally know why: it turns out that the Earth's gravity is playing a joke on us.

Because the Earth is slightly elliptical, the radius of its north and south poles is 20 kilometers smaller than the equatorial radius. The smaller the radius, the greater the attraction; and vice versa.

Therefore, when the 5,000 tons of mackerel in the Netherlands are shipped closer to the equator, the weight of the mackerel naturally becomes "lighter". There are many other ways in which the weight of an object can change! In the mountains, it is lighter than on the ground; at the equator, it is lighter than at the poles; in the water, it is lighter than on the land, and so on.

It is conceivable that if you fly to a region of high altitude where the Earth's gravity does not reach, there will be no weight there at all, because the Earth's attraction is very small there. However, the mass of the object does not change, no matter how it changes! How is it, now you understand the reasoning behind it! In fact, there are many similar problems around us, as long as we can find them in time, and combined with the theory, you can find the right answer.

I believe that when you encounter similar problems in the future, do not "helpless" oh! Cat TriviaCats have 230 bones. Cats have a better sense of hearing than humans and dogs.

Relative to body size, cats have larger eyes than any other mammal. The normal pulse rate of a cat is between about 110 and 170 beats per minute.

The normal body temperature of a cat is about 39 degrees. Cats can jump vertically up to five times their own body height.

The nose pattern of a cat is unique, no two cats have the same nose pattern. Cats respond to women more than men because the frequency of women's voices is higher than that of men.

Domestic cats run at a speed of about 55 to 60 kilometers per hour. Cats are the most sleepy mammals, sleeping for about 16 hours of the day.

Bird Fun Trivia What bird is not easily noticed? When you pass a tree in the forest with a sandpiper, you may not notice that there is a sandpiper in the tree. The sandpiper is not a very small bird, but a large bird, but its beautiful feathers, which look like autumn leaves, and its pretense of standing still, are what make it hard to notice. The sandpiper stands in the tree, keeping a watchful eye on the surroundings, and even the slightest movement behind it can be detected at once.

This is because its eyes are located at the back of its head, so no enemy can escape its sight. Of course, few insects are spared from its prey.

Where does the grouse live? The grouse lives in the cold plains of the northern and southern hemispheres and is one of the few birds in the boreal regions. In winter, the bird roosts in pine or fir trees.

In order to withstand the cold climate, it has to eat a lot of needles to produce energy. Near the poles, the days are short and the nights are long during the winter, so the grouse spends almost the entire day feeding.

When spring arrives, grouse go on a courtship. They are usually chosen by the female for the male, and must win the match to be favored by the female.

Do parrots talk to each other?" Baby get up!" Some parrots can talk, but they don't really converse. Parrot owners patiently teach them simple words and phrases that they can pronounce, but they don't know what they mean.

Animals can talk to each other in their own way, not in words we understand. Their cries might mean: "I'm scared"; "Please touch me"; "I've found food"; or "Danger! Run!" Color, movement and scent can also be used as tools for communication between animals.

Hunters can mimic their calls, smells, and more to set up traps for them to fall into. Penguins don't build nests? The truth is that penguins don't build nests.

While the mother penguin goes to the sea to find food, the father penguin is on land, incubating his eggs by placing them between his feet and covering them with his big, fat belly, standing up. The penguins incubate their eggs in the same place every year, using their beaks and wings to protect their offspring from any enemies that may come their way.

The newborn chicks go to mom and dad's beaks for food. Penguins feed on fish, shrimp and shells. Shrimp and shells are their food.

During the summer months, when food is plentiful, they spend all their time replenishing their diet, often diving hundreds of meters into the ocean in search of food. Can Penguins Fly Penguins are peculiar animals, inflexible but cute.

Their feet look like they are wearing the same pants, and it is very difficult for them to walk with a twist. Penguins are trying to keep their balance, so they keep their old tops open with shriveled wings.

Although they can't fly, they are still birds. Their heavy coats are covered with small, very tightly packed feathers that are filled with oil.

Penguins are very agile in the water as they move forward with their wings, as if they were equipped with an engine. Penguins are very active and love to dive and play in the water.

When they are running away from their predators, they often come out of the water and can glide more than a meter in the air. Which bird nest is the most beautiful? There are many different kinds of birds that fly in the sky, and each one builds a different nest.

Hummingbirds have nests smaller than a spoon, and some eagles have nests bigger than a car. Birds use fluff, twigs, saliva, or spider's webs for their nests.

Bird nests are shaped like bowls and balls; some are suspended like cradles, while others float on water like rafts.100 There is a kind of weaver bird in Africa, which builds its nests intricately. Some birds also color their nests to attract the attention of females.

There are many other kinds of nests in the world, and it's up to you to choose which one is the most beautiful! How do birds fly long distances? When birds travel long distances, they fly in flocks for days at a time. Terns, for example, fly the distance from the North Pole to the South Pole, a distance of about 20,000 kilometers, in this way.

Long-distance flights for birds are actually quite grueling. In flight.

5. Life and entertainment tips

Every morning when you get up, give yourself a smile, and then the big difficulties, there is nothing that can't be done, I hope you are happy every day, you can be like this. 1. confided in the confided in the inner feelings and the outside world can be achieved *** balance, to avoid disasters and illnesses.

When encountering misfortune, trouble and unhappy things, do not be depressed, buried in the bottom of the heart, but should be these troubles to your trust. The cool-headed, understanding people to talk to, talking to yourself is fine, to the animals around you to speak is also fine.

2. Travel When a person is mentally unbalanced and distressed, he should go to nature. The air around the mountains or the seashore contains more anions.

Anions are substances necessary for the survival of humans and animals. The more anions there are in the air, the more oxygen the organs and tissues of the human body receive, the more the metabolism flourishes, and the regulation of the nerves and body fluids is enhanced, which is conducive to the promotion of the health of the body.

The more healthy you are, the easier it will be for you to stay calm. 3. Read books, read books of interest, read books that make people relaxed and happy, read carelessly, casually flipping.

But if you grab a good book, you will love it, and then all the troubles of the world will be left behind. 4. Listen to music Music is the beautiful language of human feet.

Listen to a good song, listen to relaxing music will make people happy, immersed in happiness and enjoyment and forget the troubles. Singing loudly is also a kind of temperament, a dash, a kind of relief, a call for longevity.

5. Seek elegance Elegance includes chess, playing cards, painting, fishing and so on. When engaging in your favorite activities, the unbalanced psyche is naturally and gradually balanced.

"Regardless of the current troubles and future threats, once the picture begins to unfold, there is no place for them on the screen of the brain. They recede into the shadowy darkness, and one's full attention is focused on the work."

Elizabeth was cured of depression by painting. 6. Do good deeds Do good deeds to get pleasure and balance your mind.

Doing good, inner comfort, feel solid; others respond, they get encouragement, happy mood. Start with yourself and be kind to others so that you can have friends.

When others need help, stretch out your hand, give a care to people. Kindness is the best quality, you can't love everyone, but you try to be friendly with everyone as much as possible.

7. Forgetting Forgetting is also a good way to maintain mental balance. Forget your worries, forget your sorrows, forget your bitterness, forget your disappointments, forget your yesterday, forget yourself, forget the harm done to you by others, forget the betrayal of your friends, forget your fragile feelings.

Forget the regret and shame you had...so you can be optimistic and open-minded. The road of life is winding and bumpy, for honor and disgrace, wealth, poverty, slander, jealousy, sour and other social attachments, a smile, then you get relief, psychological balance.

Forget about the people and things that are harmful and unhelpful, and keep the mental balance. Life is short, everything should be open-minded, at any time and place to maintain psychological balance, keep a normal heart, not surprised by the changes, smile and always open, go back in style, will be happy to live a life.

6. about life's little knowledge of the topic and answer

about life's little knowledge of the topic can be written such as chewing gum accidentally swallowed into the stomach what will happen, can let the fish out of the water to live, etc., the specific content is as follows:

1, if each of us stay home all day long, the influenza whether it will disappear in the crowd?

A: Yes. This would theoretically create a global immune system, but if one person walked out, the germs would spread immediately.

2. If gum is accidentally swallowed, is it true that it cannot be digested and remains for years?

A: No, it is not. Chewing gum is indeed difficult to be digested, but it still does not have the ability to escape the normal human digestive system, up to about three days time will be digested.

3. What does the word OK stand for?

A: The most common belief is that OK is derived from the misspelled phrase "oll korrect", which originally meant "all correct". It originated in Boston newspapers in the 1840s, when it was popular to misspell words for humorous effect.

4. Can a fish live out of water?

A: Yes, you can. There are many species of amphibious fish in the world. Similarly, there are about 50 species of fish that can fly.

5. Do some plants die of old age?

A: Some plants can live forever if they are kept in good living environment and conditions. But once there is a change in the external environment, their life span will end.

6. Is an oceanic climate good for the human body?

A: Not entirely. The invigorating smell of the sea air is derived from a chemical product of coastal bacteria, although it is a very small proportion of the air. But recent studies have shown that salt in the sea reacts with these chemicals to release harmful gases that pollute the air in harbors.

7. Is talking to oneself a sign of insanity?

A: No, it is not. Talking to oneself is a normal behavior when people are stressed or when they are alone.

8. Where does fear come from?

A: About 10% of people suffer from internal fears on a regular basis. Some may lead to physical problems, some even to trauma. Studies have shown that simple phobias may be related to genetic inheritance, while others are due to cultural and historical factors. As an analogy, the fear of spiders originated in the Middle Ages, when it was believed that spiders were associated with the plague.

7. Daily life knowledge

Head

1. When a headache, dizziness, can be applied to the temples of the toothpaste, because toothpaste contains menthol, clove oil can be analgesic.

2. Headache when the apple grinding into mud coated in gauze, pasted in the headache, the symptoms can be reduced.

Oral cavity

1. Yellow teeth, you can chew the peanuts in your mouth, and brush your teeth for three minutes, very effective;

2. Eat something with a bad smell, such as garlic, stinky tofu, eat a few peanut rice on the way;

3. If there is a small area of skin injuries or burns, burns, smeared on a small amount of toothpaste, you can immediately stop the bleeding and pain;

4. p> 4. mouth ulcers, with vitamin C paste in the ulcers, and so it dissolves the ulcers are basically good;

5. eat spicy things, feel like it is going to be spicy death, put a little salt in your mouth, contain a little, gargle, it is not spicy.

Eye

1, continuous eye never more than 40 minutes. Experts believe that the correct eye habits are the most important to protect the eyes. If you use your eyes for more than 40 minutes at a time, you will take a 10-minute break, look into the distance, or close your eyes and rest for a while, so that your eyes are not easily fatigued and dry.

2, eat more yellow-green vegetables. Such as carrots, corn, tomatoes, broccoli, kiwi, etc., rich in lutein and zeaxanthin, can prevent functional degeneration of the eyes.

3, playing table tennis, more turning eyes. Experts say that when playing table tennis, the eyes will rotate with the rapid movement of the object, play the role of regulation, relaxation, delay presbyopia, prevention of myopia.

4, often drink wolfberry chrysanthemum tea. Often look at the computer, so Zhang Jian's eyes are also tired, so he often give himself a cup of wolfberry chrysanthemum tea, this tea has a bright eye, brain, liver effects, can improve dry eye symptoms.

5, go out to wear sunglasses. Eyes are easily attacked by ultraviolet rays, not only the skin around the eyes will be aging, vision also has a certain impact. Therefore, as soon as you go out, especially in summer or go to the beach, mountains and other places where UV rays are stronger.

Nose

1. After washing your face, dip your fingers in some fine salt on both sides of your nose and gently ***, then rinse with water, blackheads and pimples will be cleaned up, and pores will be smaller.

2. Side *** can treat nasal congestion, the left side of the nasal congestion facing the right lying down, the right side of the nasal congestion facing the left lying down, with the index finger and middle finger pinch the nose, *** both sides of the bridge of the nose to Yingxiang points for 1-2 minutes, nasal congestion can be eliminated.

3. Nose clogging, nasal passages are not ventilated, paste raw onion slices instantly effective.

Throat

1. If the throat and gums are inflamed, cut the watermelon into small pieces at night, dip it in salt and eat it, remember that it must be at night, the symptoms will be reduced at that time, and the next day will be better.

2. Drink some vinegar when hiccups, instant results.

3. Treatment of cough, especially dry cough, before going to bed at night, with pure sesame oil fried eggs, oil to put a little more, what seasoning do not put, eaten while hot and go to bed, even eat a few days effect is very obvious.