Why is the weather hot and cold?

The cold source of cold air actually comes from space. It is very cold in outer space without atmospheric protection. The temperature is close to absolute zero-MINUS 273 degrees. The sun brings us light and thermal radiation, but the amount of thermal radiation is still amazing. The atmosphere is like a quilt to protect the earth, so that the life on the earth will not be destroyed by the huge temperature difference. Let's look at the moon first. There is a thin atmosphere on the surface of the moon. When the sun shines, the temperature reaches 100 degrees, and when the sun doesn't shine, the temperature drops to-0/00 degrees. Without any protection, living things can't survive. The intensity of sunlight directly determines the temperature. The closer you get to the equator, the hotter you get, and the colder you get to the poles, because the poles receive less sunlight. Because the earth is pulled by the moon, its rotation produces an inclination angle, so the direct light of the sun is not fixed on the equator, but moves in an S-shape from north to south. When the sun is in the tropic of cancer, people in the northern hemisphere will feel warm and hot, but the southern hemisphere will feel cool and cold. When the sun is in the tropic of cancer, people in the northern hemisphere will feel cold.