Why is it hot in summer?

A year is divided into four seasons: spring, summer, autumn and winter. The causes of the four seasons and the distance between the earth and the sun have little to do with the hot and cold climate.

The formation of the four seasons is mainly due to the equator and ecliptic (the path of the sun seen on the earth).

Oblique crossing

. When the earth moves, its axis remains the same in the direction of space.

In winter,

solar ray

Obliquely incident on the ground, the heat per unit area of the ground is less, and the day is short, so the time of being exposed to sunlight every day is short, that is, the heating time is short, and then the atmosphere around the earth absorbs some light and heat. When light is irradiated, the thicker the atmosphere it passes through, the more it is absorbed, resulting in

It's cold in winter

In summer, on the other hand, the sun shines directly on the ground, the days are long, and the light passes through the atmosphere very thin, so the climate is hot. In the spring and autumn rainy season, it is in

Between winter and summer.

So the climate is mild. It is because in winter, the height angle of the sun is small, the sunlight shines obliquely on the earth, and the solar energy reaches the earth.

energy density

Small, the earth gets less energy from the sun, so it is cold in winter; In summer, the height of the sun is high, and the sun shines almost directly on the earth. The energy density of solar energy reaching the earth is high, and the earth gets more energy from the sun, so it is hot in summer.

because

The earth moves around the sun.

It's oval. In winter, our earth is far away.

The distance of the sun

Closer; In summer, our earth is far from the sun.