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Unusual facts about science for schoolchildren. If you remove all interatomic space, humanity will fit into a sugar cube. Facts about famous scientists

Newborns usually have about 270 bones, most of which are very small. This makes the skeleton more flexible and helps the baby pass through the birth canal and grow quickly. Many of these bones grow together as they grow older. An adult skeleton has an average of 200-213 bones.

2. The Eiffel Tower grows 15 centimeters in summer

The huge structure is built with temperature compensators, thanks to which the steel can expand and contract without any damage.

As the steel heats up, it begins to expand and takes up more volume. This is called thermal expansion. Conversely, a drop in temperature leads to a decrease in volume. For this reason, large structures such as bridges are built with expansion joints that allow them to change in size without damage.

3.20% oxygen is generated in the Amazon rainforest

The Amazon rainforest covers 5.5 million square kilometers. The Amazonian jungle produces a significant portion of the oxygen on Earth by absorbing huge amounts of carbon dioxide, which is why they are often called the lungs of the planet.

4. Some metals are so reactive that they explode even on contact with water

Some metals and compounds - potassium, sodium, lithium, rubidium and cesium - exhibit increased chemical activity, so they can catch fire with lightning speed upon contact with air, and if they are immersed in water, even explode.

5. A teaspoon of a neutron star will weigh 6 billion tons

Neutron stars are the remnants of massive stars, consisting mainly of a neutron core covered with a relatively thin (about 1 km) crust of matter in the form of heavy atomic nuclei and electrons. The nuclei of stars that died during a supernova explosion were compressed under the influence of gravity. This is how superdense neutron stars were formed. Astronomers have found that the mass of neutron stars can be comparable to the mass of the Sun, while their radius does not exceed 10-20 kilometers.

6. Every year Hawaii approaches Alaska by 7.5 cm

The earth's crust consists of several huge parts - tectonic plates. These plates are constantly moving with the top layer of the mantle. Hawaii is located in the middle of the Pacific Plate, which slowly drifts northwestward toward the North American Plate, on which Alaska is located. Tectonic plates move at the same speed as human nails grow.

7. In 2.3 billion years, Earth will be too hot for life to be possible.

Our planet will eventually become an endless desert, similar to today's Mars. For hundreds of millions of years, the Sun has been heating up, getting brighter and hotter and will continue to do so. In more than two billion years from now, temperatures will be so high that the oceans that make the Earth habitable will evaporate. The entire planet will turn into an endless desert. As scientists predict, in the next several billion years, the Sun will turn into a red giant and completely swallow the Earth - the planet will definitely come to an end.

Thermal imagers are able to identify an object by the heat it emits. And polar bears are experts at keeping warm. Thanks to a thick layer of subcutaneous fat and a warm fur coat, bears are able to endure even the coldest days in the Arctic.

9. Light will take 8 minutes 19 seconds to get from the Sun to the Earth

It is known that the speed of light is 300,000 kilometers per second. But even at such a dizzying speed, it will take time to cover the distance between the Sun and the Earth. And 8 minutes is not so much on a cosmic scale. To reach Pluto sunlight it will take 5.5 hours.

10. If you remove all interatomic space, humanity will fit in a sugar cube

In fact, more than 99.9999% of an atom is empty space. An atom consists of a tiny, dense nucleus surrounded by a cloud of electrons, which proportionally take up more space. This is because electrons move in waves. They can exist only where the crests and troughs of waves fold in a certain way. The electrons do not stay at one point, their location can be anywhere within the orbit. And therefore they take up a lot of space.

11. Stomach juice can dissolve razor blades

The stomach digests food thanks to caustic hydrochloric acid with a high pH (hydrogen index) - from two to three. But at the same time, acid also affects the gastric mucosa, which, however, is able to quickly recover. Your stomach lining is completely renewed every four days.

Scientists have many versions of why this is happening. Most likely: because of the huge asteroids that influenced its course in the past, or because of the strong circulation of air currents in the upper atmosphere.

13. A flea can accelerate faster than a space shuttle

Jumping fleas reach mind-boggling heights - 8 centimeters per millisecond. Each jump gives the flea an acceleration of 50 times the acceleration of the spacecraft.

What interesting facts do you know?

Most of us are far from science and do not understand much about this, but does this prevent us from learning interesting scientific facts about the world that surrounds us? Many interesting, funny and surprising things are hidden from our eyes.

Proven scientific facts

Various scientific facts

Human Facts

A little about the world around

Space awaits us

• The length of a day on Mars is almost the same as on Earth, they are only 39 minutes longest.
• Fastest planet Solar system is Jupiter. It only needs ten hours to fully rotate around the axis.
• The galaxy in which we are located contains about 200-400 billion stars.
• At a decent distance spaceship can take a photo of a million square kilometers of the area of ​​our planet in just ten minutes. You can do the same with an airplane in four years.

Outcomes

The concept of a scientific fact is quite broad, therefore, a lot of information from different fields of knowledge can belong to this category of knowledge. To recognize a fact as such, it must not only be proved, but also verified. The problem with scientific fact is that very often this evidence is neglected and presented raw, but science can always tell the truth from the false.

Friends, today we would like to lead 30 irrefutable and scientifically proven facts about our body and food that we eat every day. Read on to find out where we got white bloom on our tongue and at what hours our liver processes alcohol best!

So here are the bodily food facts and about what is associated with our digestion and food intake:

Your hair can support the weight of a whole apple. Scientists have not yet specified the size of the apple.

You have as many bacteria in your mouth as there are people on our planet.

The lining of your stomach is renewed every 3 days.

In our digestive system so much acid that you can easily digest an iron nail with it. But we do not advise you to experiment, just take our word for it!

Your body produces approximately 1 liter of saliva every day.

Some scientists believe that the saliva that you have produced during your life can fill two pools. And the saliva of these scientists, of course, too!

The white coating on the tongue that you see every morning is the cells that have died during the night.

The liver breaks down alcohol most actively between 18:00 and 20:00. So plan your active get-togethers with these hours in mind!

Men have much fewer taste buds on their tongues than women. Therefore, we pour all dishes with ketchup and mayonnaise. And do not be offended by this!

1/2 of your (sorry) bio-waste is bacteria.

Your tongue print is absolutely unique, keep this in mind when showing it bad people. :)

By the way, it is the tongue that is the strongest muscle in our body. Not what you just thought. :)

A person's ability to eat inedible objects, such as swords, spoons, stones, plastic, etc., is called polyphagia... Small objects leave the body along with feces, and large ones remain until they begin to bother the owner. We do not recommend eating anything inedible - it is better to try the dishes according to our recipes, which can be prepared for a festive table or quickly and tasty!

The sword swallowers actually swallow these most inedible swords - this is proved by X-rays. The length of the sword can reach as much as 62 cm! I wonder how they get them then ?!

For 24 hours every day, you excrete about 1 liter of bile.

Our intestines are about 9 meters long. This is what you need to measure, and not what is usually measured!

Your stomach can hold about 4 liters of partially digested food.

Are you addicted to fasting? It's a good thing, but do not starve for more than 1 day - otherwise you will provide yourself with permanent headaches, weakness and lethargy. In addition, fasting is bad for diabetics and heart patients. Use the section of our website with recipes for lean dishes and diet dishes.

How much does a person's heart weigh? The heart of every adult weighs approximately 220-260g.

The most common food allergy in the world is cow's milk allergy. For those who do not have it - use our recipes to quickly and easily prepare the most delicious milk recipes according to our recipes!

Our navel is scientifically called umbilicus... Great nickname for a dog - use it to your health!

99% of all calcium in our body is found in our teeth.

In terms of hardness, the enamel of your teeth can be compared to quartz.

During the day, your body can generate as much heat as is enough to bring 30 liters to a boil cold water... How do you fight the annual blackout hot water?

Bumping your head against a wall loses about 150 calories per hour. Here it is - the most reliable way to lose weight!

The fat in our body is enough for an average of 7 bars of laundry soap. Plus we can also heat water! Just a bath and laundry complex of some kind.

Have overweight women smart children are born - scientists have found out. Remember this when dealing with the opposite sex!

The stomach uses hydrochloric acid (HCl) to digest food. Yes, yes, the one that melts our skin and causes burns in films!

Your body contains as much chlorine (Cl) as is enough to disinfect as many as 5 pools (2 of which, most likely, are filled with your own saliva). :)

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Based on XXL magazine 01/2011

Some parents tell their baby: "You are the light of my life." But did you know that if you were light, you would orbit the entire globe 7.5 times per second! If you became sound, you could fly around the Earth in 4 hours! If we lived on Jupiter, our day would consist of only 9 hours. It's good that on Earth a day lasts 24 hours, because we need to do so much throughout the day! These are just a few fascinating scientific facts that may interest both an inquisitive child and an adult.

What is Science?

Science is an organized and sequential study involving observation, collection of scientific facts, experimentation, verification of results, and explanation of natural and man-made phenomena. This is an area that enables us to better understand the world and create good things for the benefit of man and all living beings.

Common scientific facts

Now that you know what in question, we offer some interesting scientific facts:

• If you stretch a human DNA strand, its length will be the distance from Pluto to the Sun and back.
• When a person sneezes, the speed of their exhaled air is about 160 km / h.
• A flea can jump to a height that exceeds its own height by 130 times. If the flea were 1.80 m tall, it could jump 230 m.
• Electric eel produces electricity voltage of 650 volts. Touching it is the strongest shock a person can experience.
• Light particles and photons take 40,000 years to travel from the core of the Sun to its surface, and only 8 minutes to reach the Earth.

Science Facts About Earth

Earth is our home. To take care of her, we need to know important information about her:

• The Earth is between 5 and 6 billion years old. The Moon and the Sun are about the same age.
• Our planet is composed primarily of iron, silicon and relatively small amounts of magnesium.
• Land - only planet in the solar system, on the surface of which there is water, and the atmosphere is 21% oxygen.
• The surface of the Earth is made up of tectonic plates located on the mantle, a layer located between the Earth's core and the surface. This structure of the earth's surface explains earthquakes and volcanic eruptions.
• About 8.7 million species of living organisms live on Earth. Of these, 2.2 million species live in the ocean, and the rest on land.
• ¾ Earth's surface is covered with water. When astronauts first saw Earth from space, they saw mostly water. This is where the name "blue planet" comes from.

Environmental facts

Why are the seasons changing? What happens to the garbage after we throw it away? What makes the weather hot or cool? Children learn this and much more in nature studies lessons at school. Let's look at some of the facts that convince us of what a wonderful planet we live on.

• Plastic decomposes completely in the earth in 450 years, and glass in 4,000 years.
• Every day in the world 27,000 trees are used only for the manufacture of toilet paper.
• 97% of all water on Earth is salty and unusable. 2% of the water is in glaciers. Therefore, only 1% of water is suitable for consumption.
• The meat processing industry contributes the most to global warming. In second place among global problems- deforestation. About 68% existing species plants are likely to die out soon.
• The population of the Earth is more than 7 billion people. This figure is expected to reach 8 billion by 2025.
• Unfortunately, according to scientists, 99% of existing species of living organisms will become extinct.

Fun facts about animals

The animal kingdom is beautiful and amazing. It contains tame otters, powerful eels, singing whales, giggling rats, sex-changing oysters, and many other equally amazing representatives. Here are some facts about animals that your child will surely like:

• Octopuses have three hearts. An even stranger fact: in lobsters, the urinary tract is on the face, and turtles breathe through the anus.
• In seahorses, the offspring are males, not females.
• The kakapo parrot has a strong pungent odor that attracts predators. This is why the kakapo are endangered.
• A squirrel plants more trees than the average person in a lifetime. How can this be? The fact is that squirrels hide acorns and nuts underground, and then they forget exactly where they were hidden.
• Lions are hunted mainly by lionesses. Lions only intervene when necessary.

Interesting facts about plants

Plants green our planet, produce oxygen, make the Earth habitable. Trees and plants are probably the most useful among the living inhabitants of the Earth. We offer several interesting facts about plants:

• Like humans, plants recognize other plants in their species.
• In total, there are more than 80,000 edible plants on Earth. We eat about 30 of them.
• Humanity is rapidly destroying forests. About 80% of all forests have already been destroyed.
• The oldest tree in the world (sequoia) is located in the USA, in the state of California. His age is 4 843 years.
• The height of the tallest tree in the world is 113 m. It is also located in California.
• The most a big tree in the world - aspen growing in the USA, in the state of Utah. Its weight is 6,000 tons.

Space facts

The sun, stars, planets, the Milky Way, constellations and everything in the Universe is located in vacuum space. We call it space. Here are some fun facts about him:

• The Earth is tiny compared to the Sun, which is 300,000 times its size.
• The whole space is absolutely soundless, because sound does not propagate in a vacuum.
• Venus is the hottest planet in the solar system. The temperature on the surface of Venus is 450 ° C.
• The force of gravity changes the weight of a person on different planets. For example, the force of gravity on Mars is lower than on Earth, so a person weighing 80 kg on Mars will weigh only 31 kg.
• Since there is no atmosphere or water on the moon, nothing can erase the tracks of astronauts who set foot on its surface. Therefore, traces are likely to remain here for another hundred million years.
• The core temperature of the Sun - the closest star to Earth - is 15 million degrees Celsius.

Facts about famous scientists

For a long time, people thought that the Earth was flat, that the change of seasons depends on the mood of the gods, and evil spirits cause disease. This continued until the great scientists proved the opposite. Without them, we would still be living in ignorance.

• Albert Einstein was a genius, but his talents were revealed quite late. After the death of the scientist, his brain was the subject of numerous studies.
• Nicolaus Copernicus refuted the theory that the Earth is the center of the universe. He developed a model of the solar system with the sun in the center.
• Leonardo da Vinci was not only an artist. He was also an outstanding mathematician, scientist, writer and even musician.
• Archimedes invented the law of fluid displacement while taking a bath. It's funny that, according to legend, he jumped out of the bath, shouting "Eureka!" He was so excited that he forgot that he was not wearing any clothes.
• Marie Curie, the woman chemist who discovered radium, was the first person in the world to win the Nobel Prize twice.

Scientific facts from the world of technology

Technology is the engine of progress. We are so addicted to technology in Everyday life that it is even scary. Here are some fun facts about technical devices that we encounter on a daily basis:

• The first computer game appeared in 1967. It was called "brown box" (translated from English - "brown box"), because that is what it looked like.
• The world's first computer, ENIAC, weighed over 27 tons and occupied an entire room.
• The Internet and the World Wide Web are not the same thing.
• Robotics is one of the most relevant scientific fields today. However, back in 1495, Leonardo da Vinci drew the world's first robot diagram.
• "Camera Obscura" - a prototype of a camera that influenced the development of photography. It was used in Ancient Greece and China for projecting images onto the screen.
• There is an interesting technology by which plant waste is used to generate methane, which, in turn, can be used to generate electricity.

Engineering Science Facts

Engineering helps create beautiful things - from homes and cars to electronic gadgets.

• The highest bridge in the world is the Millau viaduct in France. It is located at a height of 245 m, supported by beams suspended by cables.
• The Palm Islands in Dubai can be called a modern wonder of the world. These are man-made islands floating on water.
• The world's largest particle accelerator is located in Geneva. It was built to aid the research of more than 10,000 scientists and is located in an underground tunnel.
• The Chandra Space Observatory is the world's largest X-ray telescope. It is also the largest satellite ever launched into space.
• Today the most grandiose project in the world - New Valley in Egypt. Engineers are trying to convert millions of hectares of desert into agricultural land. Imagine what it would be like if we could green the Earth in the same way! Our planet would regain its original purity!

Science is a wonderful field that inspires many people. All you need is to get the child interested in her. And who knows, maybe your child will grow up to be the second Einstein.

Vkontakt

The 21st century is an amazing time when scientists make new discoveries almost every day about things seemingly known to everyone. This review contains very interesting scientific facts that were discovered quite recently and therefore are still unknown to many.

1. Phytoplankton


Scientific fact about phytoplankton.

At least half of the Earth's oxygen comes from the ocean, not trees. Miniature aquatic plants, called phytoplankton, live near the surface of the water, drift due to currents, and in general do everything that ordinary plants do - i.e. generate oxygen as a byproduct of carbon dioxide processing.

2. Bacteria in the brain


Scientific fact about bacteria in the brain.

Microbiologists at the University of Idaho claim that the human body has about ten times more bacteria than normal cells. However, this is good news as the vast majority of these bacteria are beneficial.

3. Plague, smallpox and HIV


Scientific fact about plague, smallpox and HIV.

10% of Europeans are immune to the HIV virus as a result of a genetic mutation. Scientists believe that this mutation is the result of all outbreaks of plague in the Middle Ages. That is, since the ancestors modern people survived the Black Death and smallpox, today a number of people are immune to HIV. Genetics is a strange thing.

4. Alpha pinene


Scientific fact about alpha pinene.

Pine oils actually contain an anti-inflammatory compound called alpha pinene. It has already been used to treat bronchial diseases such as asthma. Currently, the possibility of their mass use against a number of inflammatory diseases is being studied.

5. Computer games


Scientific fact about the benefits of computer games.

It turns out computer games(in "moderate" amounts) are actually helpful. They improve memory and multitasking skills, can help people with dyslexia, increase coordination, and reduce stress.

6. Own reality


A scientific fact about your own reality.

People actually avoid information that jeopardizes their happiness and worldview. They surround themselves with the things they like and actually create their own reality.

7. Peacock eyes


Scientific fact about peacock eyes.

The peacock eyes "Saturnia moon" do not have a mouth. After these insects emerge from their cocoon, they have 7 days during which they mate and then starve to death.

8. Coffee and cocaine


Scientific fact about coffee and cocaine.

Coffee is the most widely used recreational drug known to mankind. In fact, it is a stimulant just like cocaine. When someone says that he cannot live without a cup of coffee in the morning and is irritable without this drink, then he is not joking. These are symptoms of addiction.

9. Leucine enkephalin


Scientific fact about leucine enkephalin.

When a person cries with a disorder, the tears that are released contain a hormone that is a natural pain reliever. The body makes this hormone (called leucine enkephalin) when it is under stress. So if someone feels like they need to sit and cry, their body just tries to calm itself down.

10. Biological immortality


Scientific fact about biological immortality.

There are animals and plants that are considered "biologically immortal." Although they actually die, this is only due to injury or illness, not due to age. Jellyfish and lobster are two prime examples of this.

11. Smell of cut grass


Scientific fact about the smell of cut grass.

The smell of cut grass is actually a distress signal. In fact, this smell signals that the herb is screaming in pain.

12. Honey in sealed vessels


Scientific fact about honey in sealed vessels.

Honey in sealed containers does not rot or spoil. It can actually be edible after being left for thousands of years. For example, jars with still edible honey inside were found in Egyptian tombs.

13. Sunflowers and radiation


Scientific fact about sunflowers and radiation.

Sunflowers are sometimes used to clean up radioactive waste and radioactive soil. Sunflowers actually absorb radioactive isotopes as they grow and literally suck radiation out of the soil. The flowers and stems of sunflowers then become radioactive.

14. Frog pregnancy test


Scientific fact about the frog pregnancy test.

Until the 1960s, doctors determined whether a woman was pregnant by injecting her urine into a female frog. If the frog laid eggs on the same day (due to hormones in the pregnant woman's urine), then the "test" was considered positive. Before frogs, rabbits or mice were used, but they had to be killed and dismembered to see if the hormones had any effect on the animal.

15. Earthquakes


Scientific fact about earthquakes.

Several hundred earthquakes occur in the world every day. Their magnitudes are just so low (2 or lower) that people often don't notice them. Most of them also take place in the middle of the ocean.