What gases in the atmosphere can sunlight reach the ground?

Hello! It can reach the ground through all the gases in the atmosphere.

If it helps you, hope.

It can reach the ground through all the gases in the atmosphere.

Atmosphere, Boss! The composition of the atmosphere is complex!

Summary. 1. Solar ultraviolet rays are divided into short waves and long waves, short waves will be absorbed by atmospheric molecules, and long waves are easily scattered by atmospheric molecules.

What is the reason for the fact that the intensity of ultraviolet sunlight near the surface of the earth is only 1% of that of the upper limit of the atmosphere.

Here's why:

This is because sunlight is scattered and absorbed as it passes through the atmosphere.

1. Solar ultraviolet rays are divided into short waves and long waves, short waves will be absorbed by atmospheric molecules, and long waves are easily scattered by atmospheric molecules.

2. Atmospheric molecules scatter the sun at the same time, so the intensity of ultraviolet rays decreases.

a. The main driving force for maintaining the surface temperature and promoting the water cycle, atmospheric movement and biological activities on the earth is solar radiation, so it is in line with the theme

b. Solar activity refers to the violent movement and changes of the sun's atmosphere, so it does not conform to the theme C. The gravitational pull of the moon is one of the main reasons for the tidal movement of the ocean, so it does not conform to the topic D. Gravitational potential energy refers to the tendency of objects in high places to move to low places due to the attraction of the earth, so it does not conform to the theme Therefore, a

It is an increase. The reason is that due to the refraction of the atmosphere (the density of the atmosphere is uneven, it varies with altitude and temperature), and we already see the sun (in fact, the image of the sun) in advance when the morning sun is still below the horizon; In the same way, when the sun goes down below the horizon, we can still see the sun.

There are pictures to prove it:

Increase! The first day refers to the sun just red, which means that the sunlight is very weak, but it is actually the sun formed by the refraction of sunlight in the atmosphere. It's true that the sun is still on the horizon. The same goes for the sunset!

dFlare The photosphere in the solar atmosphere is the surface of the sun that can be observed by the naked eye and is about 500 kilometers thick. The sunlight received on Earth is basically emitted by the photosphere. The visible light emitted by the chromosphere is less than one-thousandth that of the photosphere and can only be seen during a total eclipse or with a special telescope.

The corona is the outermost layer of the Sun's atmosphere, and its brightness is only one millionth of that of the photosphere, and can only be seen during a total solar eclipse or with a specially made heliocorona.