How far is the Earth s surface from the atmosphere?

You're in the atmosphere, and you want to ask about the thickness. Isn't it, isn't it??

This layer of air from the ground to within 10-12 kilometers is the lowest layer of the atmosphere, called the troposphere. Major weather phenomena such as clouds, rain, snow, hail, etc., occur in this layer.

The layer above the troposphere, up to about 50 kilometers high, is called the stratosphere. The air in the stratosphere is much thinner than in the troposphere, where the amount of water vapor and dust is very low, so there are very few weather phenomena.

From above the stratosphere to 80 km, some call it the mesosphere, and the temperature in this layer decreases with altitude.

The space in the layer above 80 km to about 500 km is called the thermosphere, and the temperature in this layer is very high, and the day and night vary greatly.

The layer that starts about 50 kilometers above the ground and goes about 1,000 kilometers high is called the ionosphere. Beautiful auroras appear in the ionosphere.

It is the outermost layer of the atmosphere, the transition area of the atmosphere to interstellar space, and there is no obvious boundary outside. Under normal circumstances, the upper limit is lower near the geomagnetic pole, and the near-magnetic equator is on the sunward side, about 9-10 Earth radii high, in other words, about 65,000 kilometers high. The air is extremely thin here.

0 meters, above the surface is the atmosphere.

It is about 1,000 kilometers above the Earth's atmosphere, but there is no clear boundary.

The atmosphere, also known as the atmosphere, is a layer of mixed gas that surrounds the earth due to gravity, is the outermost gaseous layer of the earth, surrounding the ocean and land, the atmosphere has no exact upper bound, there are still thin gases and elementary particles at an altitude of 2000 16000 kilometers from the surface, there will also be a small amount of gas in the underground, soil and some rocks, they can also be considered as a component of the atmosphere, the main components of the earth's atmosphere are nitrogen, oxygen, argon, carbon dioxide and less than a proportion of trace gases, These gas mixtures are called air.

When we say sky height, we often mean the height of the atmosphere.

Under the gravitational pull of the earth, a large amount of gas gathers around the earth, forming an atmosphere that is thousands of kilometers long. The density of the gas becomes thinner and thinner as the height above the ground increases. Sounding rockets still found a rarefied atmosphere at an altitude of 3,000 kilometres, and it is suggested that the upper limit of the atmosphere may extend to about 6,400 kilometres above the ground.

Scientists estimate that the mass of the atmosphere is about 6,000 trillion tons, almost one millionth of the total mass of the earth, including 78% nitrogen, 21% oxygen, argon, carbon dioxide neon, water vapor and dust.

According to the different characteristics of each layer of the atmosphere (such as temperature, composition and degree of ionization, etc.), it is divided into troposphere, stratosphere, mesosphere, thermosphere (ionosphere) and outer atmosphere from the ground.

The air movement in the layer of the atmosphere close to the earth's surface is mainly convective movement of updrafts and downdrafts, which is called the "troposphere".It varies in thickness, with a thickness of 8 kilometers above the Earth's poles and 17 kilometers above the equator, making it the densest layer in the atmosphere. Almost all the water vapor in the atmosphere is concentrated here, and it is a "big stage" to show the changes of the wind and clouds

Weather phenomena such as wind, rain, and snowfall all occur in the troposphere.

Above the troposphere, up to 50 kilometers above sea level, the air flow mainly moves horizontally and the convective phenomenon weakens, and this atmosphere is called the "stratosphere", also known as the "stratosphere".There is basically no moisture, it is clear and cloudless, and there are few weather changes, making it suitable for airplanes. At an altitude of 20 to 30 km, oxygen molecules, under the action of ultraviolet rays, form an ozone layer, which acts as a barrier to protect life on Earth from the attack of the sun's energetic particles.

Above the stratosphere, up to 85 kilometers above the Earth's surface, it is called the "mesosphere", also known as the "fugitive layer".Above the mesosphere, up to 500 kilometers above the Earth's surface, it is called the "thermosphere".Within these two layers, many interesting astronomical phenomena such as auroras, meteors, etc., often occur.

Human beings also use the thermosphere to achieve short-wave radio communication, so that people who are far away from the ocean can communicate with each other, because the atmosphere of the thermosphere is affected by solar radiation, the temperature is higher, the gas molecules or atoms are ionized in large quantities, and the recombination probability is less, forming an ionosphere, which can conduct electricity and reflect radio short waves.

Above the thermopause is the outer atmosphere, which extends to 1,000 km from the Earth's surface late surface. The temperature here is high, reaching thousands of degrees; The atmosphere is extremely thin, with a density of 1 billionth at sea level.

This question is certainly not difficult, but do you know some interesting facts about it?

First, let's get to the question. The distance from the Earth to the atmosphere is about 100 kilometers. This distance may seem short, but it is a very interesting number for the universe.

First, let's take a look at what this number of friends means on a planetary scale. A standard football field is about 100 meters long, so you can imagine that a distance of 100 kilometers is equivalent to the length of 1,000 football fields. It's a pretty long distance, but it's only insignificant for our planet.

Second, let's take a look at what this number means on a space scale. The radius of the Earth is about 6400 kilometers, so the distance of 100 kilometers is only the radius of the Earth, which is a very small number. In addition, the Earth's atmosphere is only about 1% of the Earth's radius, so the thickness of the atmosphere is much thinner than we initially thought.

However, the importance of this number lies in the fact that it marks the dividing line between the Earth and the stuffy universe. At more than 100 km, the atmosphere is very thin and there is not enough oxygen to sustain human life. This is why space pilots need to wear special spacesuits to protect them from the low pressure, high radiation, and extremely low temperatures in space.

In addition, distances of more than 100 km have led to some interesting phenomena. For example, when sunlight hits air molecules outside the atmosphere, they emit light, creating a beautiful aurora. This distance is also where satellites and space stations are located, and is the target of many space missions.

In conclusion, although the distance from the Earth to the atmosphere is short, it is an important dividing line between the Earth and the universe, marking the uniqueness and fragility of the Earth. Let's cherish our beautiful and magical planet! <>

1. The atmosphere is about 6,400 kilometers above the ground.

2. The atmosphere is a layer of mixed gas that surrounds the earth due to gravity, and is the outermost gasosphere of the earth, surrounding the ocean and land, and the thickness of the atmosphere is about 1000 kilometers or more, but there is no obvious boundary.

3. The main components of the atmosphere are nitrogen, which accounts for; Oxygen occupies; argon occupies; There are also small amounts of carbon dioxide, noble gases (helium, neon, argon, krypton, xenon, radon) and water vapor. The density of air in the atmosphere decreases with altitude, and the higher the air, the thinner it becomes.