How to explain to children why winter is coming?

The reasons for changing the seasons for each person become relevant. Already in childhood, the child begins to ask questions. Why does winter come? What happens to our planet? Why different countries have different climate?

The first and basic explanation is the creation of optimal climatic conditions for human habitation. With the change of the seasons, the temperature on the whole planet becomes comfortable for living.

What does astronomy say about the seasons?

Spring, summer, autumn, winter are eternal and non-replaceable phenomena of nature. The cause of such natural phenomena is the movement of the globe in outer space. The earth moves along a conditional orbit, which has the shape of an elongated circle.

Unfortunately, many people still live in the stereotypes of school programs, where the explanation of why winter is coming was the approach and removal of the planet from the Sun during the movement.

Astronomers have long refuted this theory and argue that the shift is due to the axis of rotation of the planet. It is tilted by 23 degrees, so the sun's rays unevenly heat up different parts of the Earth at different times.

Why is it very cold in winter?

The motion of the Earth in orbit around the sun takes 1 year or 365 days. During the whole movement, the planet rotates along its nominal axis, which causes a change of day and night.

When the northern hemisphere of the Earth turns to the Sun, it receives the maximum number of rays, while in the southern one such rays will fall "casually" on the earth's surface.

Autumn, winter are those periods of time when the Earth is at the maximum distance from the Sun. The day becomes short, and the sun shines, but does not heat.

The minimum amount of heat from the heavenly body is explained simply. The rays descend to the surface obliquely, the sun does not rise high above the horizon, so the warming up of the air will be slow.

What happens to air masses in winter?

When the air temperature decreases, the evaporation decreases, the humidity of the air changes. When the concentration of water vapor decreases in the atmosphere, the possibility of retaining heat on the Earth's surface is also minimized.

Transparent atmospheric mass of air is not capable of absorbing infrared radiation, which is used to heat the air and the surface of the earth. Why is it cold in winter? Only because the surface and air can not keep the heat, which is already served in minimum quantities.

What sun in the winter?

It is extremely important to explain to the children about the sun, its changes in the winter. Here, emphasis must be placed on the fact that the Sun is a huge, red-hot star, around which a large number of planets rotate.

The sun has a tremendous temperature, no person or aircraft can approach it, as it will simply melt and destroy them.

Thanks to solar energy, the rays on the planet Earth are possible life: trees grow, animals and people live. Without solar heat, all living things will die in a short time.

Solar energy and rays in the winter do not heat so intensely, but can do more harm to the skin. This feature has a logical explanation: the entire surface of the planet, which must reflect the rays, is light and mirror, since it is covered with snow. The human body can not reflect, it takes ultraviolet rays and is actively saturated with them. Doctors emphasize that tanning in winter is more dangerous than in summer. The skin is oversaturated with ultraviolet from the sun and can even get burned.

Interesting facts about winter

Why winter comes, children and adults can be explained by knowing the basics of astronomy. But what is hidden in the winter nature, what interesting facts about the winter are known to science and people?

• Snowflakes. Scientists have repeatedly investigated snowflakes, which descend to the surface of the earth. Such work requires special preparation, equipment and scrupulousness. The discovery for people was that snowflakes can have 7 kinds: star crystals, needles, columns, columns with tips, transparent dendrites, irregular snowflakes.

• Speed of snow mass. For many, snow is a soft, airy substance, but with a large amount of snow mass, it can descend from the surface of the earth in the form of an avalanche. The minimum speed of such an avalanche is 80 km / h, the maximum speed is 360 km / h. A huge mass of snow blows everything in its path. If an avalanche hits a person, then it dies because of the huge weight or lack of oxygen.
• For most of the world's population, the question of why winter is coming is not relevant. They do not even know that there can be a sharp change in air temperature, the figures will drop below 0, it's snowing. In some kingdoms of hot countries, games are played on artificial snow from sugar to amuse their subjects.

Why does winter come? Sooner or later this question is asked by every child. Using the presented material, each parent can easily and interestingly answer him to this question.