The main reasons for the change of day and night

The reasons for changing day and night consist in the constant and cyclic rotation of the Earth around its axis. This process is quite rapid in scale of the universe. But we manage to notice it in the dark evenings or watching the morning sunrise. Thanks to the rays of the sun, the surface of the planet warms up, and we can see the changing darkness and light.

The rays of the sun and the light of the moon

The reasons for changing day and night are that the Earth rotates around an axis that we can imagine in our minds. But it turns at the same time relative to the Sun. This happens while it is moving in orbit around the luminary.

The reasons for the change of day and night consist in the movement of the Earth along the axis passing through the poles of the planet. She manages to turn around in 24 hours. But around the Sun there is a slower rotation - for 365 days.

The reason for the change of day and night is the rotation of the planet. On different continents, the duration of the day is different. For example, in St. Petersburg there is a season of white nights, and polar days can last more than a month.

Due to what is observed the unevenness of the duration of daylight hours?

The duration of the day and night is not the same everywhere because the imaginary axis of the Earth is slightly inclined relative to the Sun. Therefore, the rays fall unequally on different hemispheres. Thanks to the redistribution of heat and there is life on the planet.

When it has cooled down during the night, the planet warms up in the daytime. There are vital metabolic processes. We see the Earth in this familiar form due to the unique movement of the planet. On different continents, vegetation and wildlife differ because of the length of the day.

The pole can be in the shade for half a year - this time is called the polar night. Then comes the next six months a day at the Pole. At a time when the north pole is night, on the south pole - day, and vice versa.

If it were not for the usual day?

Because the Earth is evenly illuminated by the Sun, there is life on the planet. Let's imagine that it would stop rotating, and on one side there would always be a day, and the second would be eternally deprived of light. The hemisphere under the Sun would have heated to a temperature at which all living things would have dried up.

The second part of the planet would begin to freeze because of the lack of sunlight. So in the present we have an ideal planet for life. The variety of living creatures amazes, and this is possible only due to the rotation of the Earth. The change of both the day and the night is important, as are the weather changes due to the arrival of different seasons.