The reasons for the change of seasons for each personbecome 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.
Spring, summer, autumn, winter are eternal and permanentnatural phenomena. The cause of such natural phenomena is the movement of the globe in outer space. The earth moves along a conventional orbit, which has the shape of an elongated circle.
Unfortunately, many people still live in stereotypes of school programs, where the explanation of why winter comes is the approach and removal of the planet from the Sun during the movement.
Astronomers have long denied this theory andargue 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.
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 conventional 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 warm.
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 warming up the air will be slow.
When the air temperature decreases,decrease of evaporations, humidity of air changes. When the concentration of water vapor decreases in the atmosphere, the ability to retain heat on the Earth's surface is also minimized.
Transparent atmospheric air mass is not capable ofabsorb 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 minimal quantities.
It is extremely important to explain to the children about the sun, itschanges in the winter. Here, emphasis should 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 sointensely, but can do more harm to the skin. This feature has a logical explanation: the entire surface of the planet, which should 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 light from the sun and can even get burns.
Why winter comes, children and adults can be explained by knowing the basics of astronomy. But what is the nature of winter, what interesting facts about winter are known to science and people?
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.
