Question

Почему молекулы газов, входящих в состав атмосферы, не падают на Землю и не покидают её?

Answer 1

Ответ:

Так как у них нет достаточной скорости. Чтобы покинуть Землю у них должна быть скорость не меньше второй космической.

Answer 2

Ответ:

Для того чтобы совсем покинуть Землю, молекула, как и космический корабль или ракета, должна иметь очень большую скорость (не меньше 11,2 км/с) .

Объяснение:

Answer 3

Why don't molecules of gases in the atmosphere fall to the Earth and leave it?

The molecules of gases in the Earth's atmosphere do not fall to the Earth and leave it due to several factors:

1. Gravity: Gravity is the force that attracts objects towards each other. The Earth's gravitational force pulls all objects towards its center, including the molecules of gases in the atmosphere. This gravitational force keeps the gas molecules close to the Earth's surface and prevents them from escaping into space.

2. Escape velocity: In order for a molecule to escape the Earth's atmosphere, it needs to reach a certain velocity known as the escape velocity. The escape velocity is the minimum velocity required for an object to overcome the Earth's gravitational pull and escape into space. The average speed of gas molecules in the Earth's atmosphere is much lower than the escape velocity, so they do not have enough kinetic energy to escape.

3. Atmospheric pressure: The Earth's atmosphere exerts pressure on the surface of the Earth. This atmospheric pressure pushes down on the gas molecules, keeping them close to the Earth's surface. The pressure decreases with increasing altitude, but it is still sufficient to keep the gas molecules from escaping into space.

4. Molecular interactions: Gas molecules in the Earth's atmosphere constantly collide with each other and with other objects, such as the Earth's surface. These collisions transfer momentum and energy between the molecules, causing them to move in random directions. These molecular interactions prevent the gas molecules from collectively moving away from the Earth and escaping into space.

In summary, the combination of gravity, escape velocity, atmospheric pressure, and molecular interactions keeps the molecules of gases in the Earth's atmosphere from falling to the Earth and leaving it.

I hope this explanation helps! Let me know if you have any further questions.