Why the sky is blue. Why the sky is blue: how to explain to a child and an adult? Why is the sky blue

Everyone has long known how inquisitive children are. They sometimes ask questions that make adults blush. It seems that everything is elementary and simple, however, it is difficult for many parents to give an answer at the same moment. In order not to get into such difficult and awkward situations when talking with a child, you need to prepare for them thoroughly.

Therefore, we will analyze those questions that are most often heard from the lips of children and that are of interest to adults.

The phrase with a question about the shade of the skies puts many parents in a rather awkward position. Children are interested in why the sky is light blue, not yellow, not red, because the cosmos is black? But if we, adults, find it difficult to answer, then this means that we ourselves do not really know the answer to this question, and it never occurred to us to ask it. And many, not knowing the correct answer, translate the topic.

Light, which consists of 7 shades of the spectrum, usually passes through the atmosphere. There is a collision of solar photons with many gas molecules contained in the air. This leads to such a phenomenon as scattering. The most interesting is the moment concerning the number of particles that are engaged in the emission of a short wave of blue tint. There are 8 times more of them. It turns out that on the way to the Earth, the shade of the sun's rays changes from white to light blue. How to explain all this to a child? But the child is still very small, what to talk to him about the photons of the sun's rays that collide with gas molecules.

Short answer in conversation for kids

The air that surrounds us is composed of tiny and constantly moving particles - gases, dust particles, motes, water vapor. They are so small that they can only be seen under a microscope, and sunlight is a harmony of seven shades. A beam that passes through air has to collide with small particles. And this leads to the fact that the shades in it are separated. And since there is more light blue in the color spectrum, we only see it. Or you can simply answer briefly that the sun's rays color the air in a light blue hue.

Joking (original) answer

Everyone thinks that air is transparent, but it is a light blue hue. We are very, very far from the sun. Looking up, we can only see a thick layer of air. It is so pure that it appears light blue. It is also possible and jokingly to answer that it is light blue, because in the game, whoever is faster always wins the light blue hue.

Funny answer for adults

Why the sky is blue? - This is all my own, the blues always have this!

Video presentation for children

Why is the sea blue, the grass green, and the sunset red?

Sea

The shade of the water of the sea depends on how deep the penetration of the rays. The sea has a good ability to absorb and scatter any rays. But the yellow tint of the beam is absorbed much faster, even not at depth. And the absorption of the blue tint of the beam is very slow, even at great depths. Therefore, it seems to us that the water in the sea is blue. The shade of the sea can be transparent, and blue, and green.

Grass

A green leaf absorbs carbon dioxide into the cells, and releases oxygen into the air. He desperately needs this. But what does it have to do with it? The sun is the main source of life. The sun's rays fall on the leaves. Their cells contain a green substance called chlorophyll. Leaves and grass, thanks to the content of chlorophyll in them, which is involved in the development of the most important nutrients, live perfectly.

The substances produced by chlorophyll are well known to us in the form of sugar, starch and protein. They are found both in the cells of plants, animals, and in the cells of the human body. And the production of these nutrients comes from carbon dioxide. The green leaf is an amazing factory. If the sun's rays touched the leaf, then we can say about their wonderful life. If there is no sunlight, then there is no factory, respectively.

Sunset

You have probably often wondered about the color of the sky at sunset. Perhaps many people wonder why the skies at sunset are sometimes scarlet, and sometimes red. What is it connected with?

This is because red is the longest wavelength of light. He can break through a thick layer of air. But why does it look light blue only in clear weather?

And this is also explained quite simply. When the weather is overcast, most of the sun's rays simply do not reach the surface of the earth. And what can still break through begins to refract drops of water suspended in the air. There is a distortion of the light wave. If the color of the sky is gray, then this is the same process, but with larger clouds. So we sorted out the question regarding the blueness of the skies and the redness of the sunset. These issues can be studied in more detail by getting acquainted with the objective laws of physics.

Why is the sky blue in terms of science: physics, chemistry?

Our planet is surrounded by air, which forms the atmosphere. The atmospheric air contains a large amount of oxygen, carbon dioxide, nitrogen, water vapor, microscopic dust particles that are constantly moving.

Sunlight manages to penetrate the atmospheric layers of air. The gases that are contained in the air work in the decomposition of white light into 7 components, spectra. These are all the colors of the rainbow and that's why it seems to us that the sky is light blue. The moon has no atmosphere and appears to be black. Astronauts entering orbit on spaceships manage to see a beautiful black velvet sky with sparkling stars and planets.

Wikipedia about the blue color of the sky

Wikipedia informs that the sky only looks light blue. In reality, the sky scatters all other colors of the rays, in addition to light blue, blue and violet. All of them together appear light blue to us.

Why is it light blue?

Sunlight has 7 colors in its spectrum, which are combined together - red, orange, yellow, light blue, indigo and violet. You can look at the pictures, remember the rainbow. Each ray needs to pass through a thick air layer. And at this moment the shades are splashed. At the same time, light blue is visible to us more than others, since it is very resistant.

What does the Bible say: why is the sky blue?

The sky is light blue, because the Almighty was pleased to create it that way.

The expression about the blue sky in English translation

Out of a clear blue sky - clear blue sky.

Scientists find blue skies on Pluto and traces of lakes on Mars

Scientists have discovered organic particles in Pluto's atmosphere called tholins. They themselves are gray or red. When they reflect sunlight, the atmosphere of this planet appears light blue. In addition, several small areas were found here that are covered with ice.

Another discovery has a connection with the planet Mars. Scientists prove that in the distant past for many years, the surface of this planet was covered with lakes. Shortly before this, there were several indications of the existence of salt water on Mars. It is the flow of salt water, as many scientists believe, that are responsible for the fact that the surface of the planet has dark stripes. They appear at the moment when the temperature on this planet rises above - 23 degrees. They disappear when it gets cold.

The world around us is full of amazing wonders, but we often do not pay attention to them. Admiring the clear blue of the spring sky or the bright colors of the sunset, we do not even think about why the sky changes color with the change of time of day.


We are accustomed to bright blue on a fine sunny day and to the fact that in autumn the sky becomes hazy gray, losing its bright colors. But if you ask a modern person why this happens, then the vast majority of us, once armed with school knowledge of physics, are unlikely to be able to answer this simple question. Meanwhile, there is nothing complicated in the explanation.

What is color?

From a school course in physics, we should know that differences in the color perception of objects depend on the wavelength of light. Our eye can only distinguish a fairly narrow range of wave radiation, with blue being the shortest and red being the longest. Between these two primary colors lies our entire palette of color perception, expressed by wave radiation in different ranges.

A white sunbeam actually consists of waves of all color ranges, which is easy to verify by passing it through a glass prism - you probably remember this school experience. In order to remember the sequence of changing wavelengths, i.e. the sequence of colors in the spectrum of daylight, invented a funny phrase about a hunter that each of us learned in school: Every Hunter Wants to Know, etc.


Since red light waves are the longest, they are the least susceptible to scattering during transmission. Therefore, when you need to visually highlight an object, they use mainly red color, which is clearly visible from afar in any weather.

Therefore, a stop signal or any other warning light is red, not green or blue.

Why does the sky turn red at sunset?

In the evening hours before sunset, the sun's rays fall on the surface of the earth at an angle, and not directly. They have to overcome a much thicker layer of the atmosphere than in the daytime, when the surface of the earth is illuminated by the direct rays of the sun.

At this time, the atmosphere acts as a color filter, which scatters the rays of almost the entire visible range, except for the red ones, which are the longest and therefore most resistant to interference. All other light waves are either scattered or absorbed by water vapor and dust particles present in the atmosphere.

The lower the sun drops in relation to the horizon, the thicker the layer of the atmosphere the light rays have to overcome. Therefore, their color is increasingly shifted towards the red part of the spectrum. A folk sign is associated with this phenomenon, saying that a red sunset portends a strong wind the next day.


The wind originates in the high layers of the atmosphere and at a great distance from the observer. Oblique solar rays highlight the outlined zone of atmospheric radiation, in which there is much more dust and vapor than in a calm atmosphere. Therefore, before a windy day, we see a particularly red, bright sunset.

Why is the sky blue during the day?

Differences in the length of light waves also explain the pure blue of the daytime sky. When the sun's rays fall directly on the surface of the earth, the layer of the atmosphere they overcome has the smallest thickness.

Scattering of light waves occurs when they collide with gas molecules that make up air, and in this situation, the short-wavelength light range is the most stable, i.e. blue and purple light waves. On a fine windless day, the sky acquires amazing depth and blueness. But why do we then see blue and not purple sky?

The fact is that the cells of the human eye, which are responsible for color perception, perceive blue much better than purple. Yet purple is too close to the edge of the perceptual range.

That is why we see the sky as bright blue if there are no scattering components in the atmosphere, except for air molecules. When a sufficiently large amount of dust appears in the atmosphere - for example, in a hot summer in a city - the sky seems to fade, losing its bright blue.

Gray sky of bad weather

Now it is clear why the autumn bad weather and winter slush make the sky hopelessly gray. A large amount of water vapor in the atmosphere leads to the dispersion of all components of the white light beam without exception. Light rays are crushed in the smallest droplets and water molecules, losing their direction and mixing over the entire range of the spectrum.


Therefore, light rays reach the surface, as if passed through a giant diffuser. We perceive this phenomenon as a grayish-white color of the sky. As soon as moisture is removed from the atmosphere, the sky turns bright blue again.

“Mom, why is the sky blue and not red or yellow?” Many parents are confused by this phrase. It turns out that we, adults who introduce our baby to the world around us, do not ourselves know the answer to such a “difficult question”? and simply, not knowing what to answer to our baby, we translate the topic, or, in order to compose an explanation accessible to the child, we have to rack our brains. Therefore, let's figure it out with you why the sky is blue and how to explain it to a small child in a simple way.

Light, consisting of seven spectral colors, passes through the atmosphere. Solar photons collide with gas molecules in the air, causing them to scatter. And the most interesting thing is that after that, the number of particles emitting a short wave of blue becomes eight times more than others. It turns out that before our eyes, sunlight on the way to Earth turns from white to blue.

How to explain all this to a child? It is still too early to talk about solar photons colliding with gas molecules. We offer several versions of the answer to this difficult question.

• Sunlight is made up of 7 colors combined together: red, orange, yellow, green, blue, indigo and violet. (Look at the pictures with the spectrum, remember the rainbow.) Each ray passes through a thick layer of air high above us, as if through a sieve. All colors at this moment are splashed and it is blue that becomes the most visible, because it is the most persistent.
• The air looks transparent, but it actually has a bluish tint. The sun is very far away. When we look up at the sky, we see a very thick layer of air, so thick that we see that it is blue. You can take transparent cellophane, fold it many times and see how it has changed color and transparency. And then draw an analogy.
• The air around us consists of tiny and constantly moving particles (gases, dust and specks, water vapor). So small that they can only be seen with the help of special devices - microscopes. And sunlight combines 7 colors. A beam passing through the air collides with tiny particles and its constituent shades are separated. And since blue-blue prevails in the color scheme, we see it. Here it is necessary to show the child the spectrum.
• And you can do it quite simply - the sun paints the air blue.

If the child is very small and it is too early to talk about the spectra? , then you can just come up with something? (options from the forums)

kitty Well, for example, like this: there is such a magician in the world who has a brush with beautiful blue paints, he wakes up, and so that the children are light and joyful, he takes out blue paint and paints the sky with it, the paint is also magical - it does not spill and dries immediately ? , but when he is upset, the sky is not blue, but dark blue and the paint does not dry, but it is raining, and the wizard has a fairy sister, and when she sees that the children are tired, she paints the sky in a dark color and throws asterisks, so that it is not very dark, and then the children have colorful dreams?

Vladimir Gor There are many seas and oceans on earth (show on the map) and in sunny weather the water is reflected in the sky and the sky becomes as blue as the water in the oceans and seas, just like it happens in the mirror (show something blue in the mirror) . This will be enough for the child to satisfy his curiosity.

Chena A fairy flew, she had paints in her basket, a bottle of blue paint fell and the paint spilled, so the sky is blue. In general, it all depends on the age of the baby ...

It is very important to involve your child in the discussion. Sometimes invite your why child to first think about the answer to the question. Try to hint, push him to conclusions. And then discuss and summarize the information. The baby needs your attention, recognition of his interests and respect for the first attempts to know the world. In this way, you will help develop your child's open and inquisitive personality.

We also read: how to explain to a child where babies come from

The sun, which heats and illuminates our Earth, thanks to which the world is painted with different colors, radiates pure white light. But when we look at the sky, we see blue and blue colors. Why not white, since the color of the sun's rays was originally like this, but the air is transparent?

Why do we see blue skies?

White is made up of the seven colors of the rainbow. That is, white is a mixture of red, orange, yellow, green, blue, blue, purple. The Earth's atmosphere is made up of a mixture of gases. The sun's rays, reaching the Earth, meet with gas molecules. Here the rays are reflected and decomposed into seven colors of the spectrum. The rays of the red spectrum (this includes: red, orange, yellow) are longer, they, for the most part, pass directly to the earth, without lingering in the atmosphere. The rays of the blue spectrum (green, cyan, indigo, violet) are short-wavelength. They bounce off the air molecules in different directions (scatter) and fill the upper layers of the atmosphere. Therefore, the entire sky is permeated with blue light, spreading in different directions.

It is worth clarifying why we do not see the sky green, but we see it blue. This happens because the colors of the blue spectrum mix with each other and the result is a blue sky. In addition, the human eye perceives blue color better than, for example, violet. Then another interesting point is why the sky is blue and the sunset is red. The fact is that during the day the sun's rays are directed perpendicular to the surface of the Earth, and during sunset and sunrise - at an angle. With this position of the rays relative to the Earth, they have to move long distances in the atmosphere, so the short spectrum waves go to the sides and become invisible, and the long spectrum waves are partially scattered across the sky. Therefore, we see the sunset and sunrise in red-orange tones.

How to explain to a child why the sky is blue?

Now that we have figured out the color of the sky ourselves, let's think about how to make an explanation of the question why the sky is blue accessible to children. For example, you can do this: the sun's rays, reaching the Earth's atmosphere, meet with air molecules. Here the solar beam is decomposed into colored light waves. As a result, red, orange, yellow light continues to move towards the Earth, and the colors of the blue spectrum are retained in the upper layers of the atmosphere and distributed over the sky, coloring it blue.

Knowing your children and their level of knowledge about our planet, you will be able to understand how easier it is to explain to your child why the sky is blue.

Astronomy for kids> FAQ>why is the sky blue

Let's talk about Why the sky is blue in a language accessible to children. This information will be useful to children and their parents.

When children look at the sky, they see an endless blue. Many even spend all day on the grass watching the clouds. It's time explain to children Why is the sky still blue?

To give complete explanation for children, parents should consider the reasons that may lead to such a phenomenon. But it can be difficult. At school you have heard about the existence of an atmosphere. It is a mixture of molecules (various gases) surrounding the planet. Depending on the location of your country and city, there may be more water in the atmosphere (near the ocean) or dust (if there is a volcano or desert nearby).

Farther for the little ones necessary explain concept of light waves. Light is energy transmitted in waves. Each type defines its own wave, oscillating in magnetic and energy fields. Light is divided into very many types, which can have a longer (or shorter) length. Children must remember that light is included in a large group - "electromagnetic fields". The visible (which we observe with our own eyes) is part of it. It consists of a whole stream of colors, namely the entire spectrum of the rainbow: red, orange, yellow, green, blue, indigo and violet.

Light travels in a straight line, which is called the "speed of light." He travels until he encounters an obstacle in the form of a speck of dust or a drop of water. Then everything depends on the size of the wavelength and the object. Dust and water are longer than the wavelength, so the light bounces off - "reflection". It spreads in different directions, but remains white because it continues to contain the entire rainbow spectrum. But gas molecules are smaller. Therefore, it is necessary explain to children that this collision leads to different results.

In this case, the light is not reflected but absorbed by the molecule. Then it fills up and begins to radiate part of the color. Although now it still contains the entire spectrum, it highlights a specific one. High frequency (blue) is absorbed faster than low frequency (red). This scientific process was discovered and described in the 1870s by the English physicist Lord John Rayleigh. That is why the phenomenon was called "Rayleigh scattering".

This is the reason why we admire the blue sky. When light travels through the air, the red or yellow part is not involved. But blue is absorbed and reflected. This is especially noticeable when looking at the horizon from a distance. The blue color then appears lighter.

There are millions of questions that, being children, we do not receive an answer, and when we grow up, we are simply embarrassed to ask. One of these

And everything would be fine, and without this knowledge you can live, but when a child begins to ask such tricky questions to his parents, they often become ashamed, and they begin to change the subject. Then the child grows up not knowing the answer, he has his own children and everything repeats again. Let's break this "vicious circle" and understand the reasons why the sky is blue. Consider the issue from all possible points of view.

The phenomenon of blue sky in terms of physics

Let's get straight to the point, the sky is blue because the earth's atmosphere scatters the light of the sun. All research conducted over the past 200-300 years comes down to this. Consider a few axioms that affect the blue sky phenomenon:

1. The white light of the sun is a combination of different color streams. White color "separately" does not exist. As everyone knows, there are only 7 colors (red, orange, yellow, green, blue, blue, purple), the rest of the colors are obtained only when they are combined. White color is obtained by combining all seven colors. It is worth considering that it is precisely the colors that we can distinguish with the eye that are meant.
2. The atmosphere is not empty, it consists of many gases: nitrogen (78%), oxygen (21%), carbon dioxide, water in its various states (steam, ice crystals). There is also a lot of dust around us, elements of various metals. All of them distort the white light of the sun.
3. The air that surrounds us and that we breathe is actually opaque. In any case, in large quantities. We do not live in a vacuum, after all.

From these three facts we will proceed further.

Story

Back in the 19th century, a scientist named John Tyndall conducted research that proved that we see the sky blue because of particles in the atmosphere. In his laboratory, he artificially created a fog with dust particles and directed a bright white beam at it - the color of the fog changed to bluish. 30 years later, in 1899, the physicist Rayleigh refuted the research of his predecessor and published evidence that the sky is blue because of air molecules and no dust in it. This phenomenon is called “diffuse sky radiation”; you can read more about this in Wikipedia.

Why is the sky blue?

What is light? Light is a stream of photons, some we can see with our eyes and some we can't. So, for example, we see the standard spectrum of colors, but the ultraviolet, which also emits the sun, does not. What color we see in the end depends on the "wavelength" of this stream. This wavelength determines what color you get.

So. We have determined that the sun sends us quanta with a wavelength that corresponds to white, but how does it turn into blue as it passes through the atmosphere? Let's take the example of a rainbow. Rainbow - is a direct example of the refraction of light and its division into a spectrum. You can create your own rainbow using a glass prism at home. The decomposition of color into a spectrum is called dispersion.

So, our sky functions as a prism. Most white light changes its wavelength as it passes through gas molecules in the atmosphere. As a result, photons “leaving” the molecules have a different color. This color can be either purple, red, or blue and blue.

Why do we see blue and not red?

What color we eventually see when light travels from the sun to the earth depends on which photons prevail. For example, when light passes through the atmosphere, the number of blue color quanta is 8 times more than red, and violet is 16 times! This is due to the very different wavelength, so violet and blue scatter strongly, and red and yellow scatter much worse. Based on this theory, the sky should be purple, but it is not. This is due to the fact that purple is much worse perceived by the human eye, unlike blue. That is why the sky is blue.

Video about why the sky is blue:

Why is the sky blue during the day and the sunset is red

Everything, again, is connected with the dispersion of color. The angle of incidence of solar white light becomes smaller, and the light passes through more air molecules, the wavelength of light increases. This amount is enough to diffuse to red.

Answer question for children

If a child asked you a question about the blue sky, you certainly will not tell him about dispersion, spectra and photons. It is enough to quote from the children's book "100 Children's Why" Tatiana Yatsenko:

Usually we draw the sun's rays in yellow. But in fact, the light of the sun is white and consists of seven colors. These are the colors of the rainbow: red, orange, yellow, green, blue, indigo, violet. Not all colors pass through the air, only blue, indigo and violet. They color the sky.

This will be enough. On our website you can also download a presentation on the topic: “Why the sky is blue” at the link: prezentaciya-pochemu-nebo-goluboe It may come in handy in the classroom at school.

In short, then ... "Sunlight, interacting with air molecules, scatters into different colors. Of all the colors, blue is the best for scattering. It turns out that he actually captures the airspace.

Now let's take a closer look

Only children can ask such simple questions that a fully grown person does not know how to answer. The most common question tormenting children's heads is: "Why is the sky blue?" However, not every parent knows the right answer even for himself. The science of physics and scientists who have been trying to answer it for more than one hundred years will help find it.

False Explanations

People have been searching for the answer to this question for centuries. People of antiquity believed that this color is a favorite for Zeus and Jupiter. At one time, explanations of the color of the sky excited such great minds as Leonardo da Vinci and Newton. Leonardo da Vinci believed that when combined, darkness and light form a lighter shade - blue. Newton associated the blue color with the accumulation of a large number of water droplets in the sky. However, it was not until the 19th century that a correct conclusion was reached.

Range

In order for a child to understand the correct explanation using the science of physics, he first needs to understand that a beam of light is a particle flying at high speed - segments of an electromagnetic wave. In a stream of light, long and short rays move together, and are perceived by the human eye together as white light. Penetrating in the atmosphere through the smallest drops of water and dust, they scatter into all colors of the spectrum (rainbow).

John William Rayleigh

Back in 1871, the British physicist Lord Rayleigh noticed the dependence of the intensity of scattered light on the wavelength. Scattering of the Sun's light by irregularities in the atmosphere explains why the sky is blue. According to Rayleigh's law, blue sun rays scatter much more intensely than orange and red ones, since they have a shorter wavelength.

The air near the surface of the Earth and high in the sky is made up of molecules, causing sunlight to scatter high in the air. It reaches the observer from all sides, even from the most remote ones. The spectrum of scattered air light differs markedly from direct sunlight. The energy of the first has been moved to the yellow-green part, and the second to the blue.

The more direct sunlight is scattered, the colder the color will appear. The strongest scattering, i.e. The shortest wavelength is for violet, the longest wavelength is for red. Therefore, during sunset, the distant parts of the sky appear blue, and the closest ones appear pink or scarlet.

Sunrises and sunsets

During sunset and dawn, a person most often sees pink and orange shades in the sky. This is because light from the sun travels very low to the surface of the earth. Because of this, the path that light needs to travel during sunset and dawn is much longer than during the day. Due to the fact that the rays travel the longest path through the atmosphere, most of the blue light is scattered, so the light from the sun and nearby clouds appear reddish or with a pink tint to a person.

Why the sky is blue?

“Dad, why is the sky blue and not, say, green or purple?”
Children, when they begin to explore the world around them, are very active in asking questions. Hundreds of questions a day about anything that comes under the spotlight. All you hear is "why-why". And dad (or mom) by no means can "fall face down" and lose authority, saying "I don't know." How can this even be, because he has been living for a very long time and knows such elementary things for sure from his childhood?
And dad, of course, knows why this sky is suddenly blue 😉, and if he suddenly forgot something, he carefully reads what is written below.

What color is sunlight?

To understand the color of the sky, and understand why it is, you first need to find out what color the sunlight has. This question seems elementary.
"Yellow" - the baby will tell you, but here he will have to be surprised for the first time.
"But it's not yellow!"
O_O - the baby will have approximately the same eyes (something is clearly wrong with dad).
“Come on, raise your head, dad! It's yellow! Why is it not? Very much yes!”
“But no!” Then dad makes an authoritative face and says:
“In fact, the color of the sun and its rays is white, and the fact that we see it yellow is because it becomes so after passing through the air.”

What is white made up of?

"What colors do you know?" the child's father asks.
"Green, yellow, red, white ..." - the kid begins to list.
“Clever! All those colors that you listed, except for white, are simple colors. But the white one is special! In nature, there is no just white, but it appears if you put together all the simple colors.
It's like in a game when you need to collect parts of an object. Here you take one part, the second, the third, etc., and when you collect everything - TADAM! You get the whole item! So is white - it consists of all colors, and if at least some shade is taken away from it, it will no longer be white. Clear?"
"Yeah," the kid nods.

So what's up with the color of the sky? Why is it blue?

“All this is very interesting, but, in my opinion, you are moving away from the topic. How about the color of the sky? Why is it like this?
“I'm just getting there. I told you elementary things so that more complex ones could be explained on the fingers.
As for the sky, I must say this. Scientists have not yet found an absolutely exact answer, but there are two simple theories that explain why the shade of the sky is blue. I'll tell you both.

First theory:

In the air that surrounds the earth, a large number of particles fly - these are different gases, dust particles, water particles, etc. When a white ray from the sun (and, as you remember, it is not by itself, but all the colors together) enters the air, then colliding with particles of air and particles that fly in the air, it begins to crumble into the colors of which it consisted.
It turned out that not all of them are equally fast, some are very clumsy, they disperse in the air, colliding with some particles, while others, very fast, dodge collisions and reach the Earth.
Blue rays are clumsy, they most often fall on obstacles and scatter (scatter) in all directions, illuminating the air with blue light.

Second theory a little more complicated:

Scientists suggest that particles of the air that surrounds the Earth absorb the sun's rays. They, as it were, are charged from these rays, and then begin to radiate their own light in all directions.

Well, for example, like a door on a stove. Remember, I showed you how the door was black at first, and then warmed up, warmed up and began to glow red? Do you remember?
“Yeah, I remember. And why did you remember the stove? .
“Yes, because it is the same here. Particles of air receive energy from the sun's rays, and then begin to glow. Different gases glow differently. The fact that we see the sky blue, according to this theory, it is thanks to the gases that make up our air (oxygen and nitrogen) that they emit a blue color. But if instead of them there would be, for example, neon (there is such a gas), then the sky would glow red-orange, but we would not be able to enjoy this spectacle, because. couldn't breathe.
Therefore, I think that even if it remains blue, blue is also okay, right?
“I agree,” the kid nodded, and after a minute, when he saw the dog, he asked the following vital question: “Dad, and