What is the altitude of the troposphere?

What is the altitude of the troposphere?

8 to 14.5 kilometers high
The troposphere starts at the Earth’s surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region. The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high.

What percent of the atmosphere is the troposphere?

approximately 75 and 80 percent
The majority of the mass of the entire atmosphere is contained in the troposphere—between approximately 75 and 80 percent.

What altitude is 50% of the atmosphere?

about 5 km
This means that air pressure varies with location and time, because the amount (and weight) of air above the earth varies with location and time. Atmospheric pressure drops by 50% at an altitude of about 5 km (equivalently, about 50% of the total atmospheric mass is within the lowest 5 km).

Why is 80% of the air in the troposphere?

The troposphere is the densest layer of the atmosphere containing 80% of its mass. This is because all the other layers of the atmosphere sits on top of the troposphere compressing it. The troposphere is mostly a mixture of just 2 gases. Nitrogen dominates 78% of the troposphere.

What is the altitude at the top of our atmosphere?

Exosphere. The exosphere is the outermost layer of Earth’s atmosphere (i.e. the upper limit of the atmosphere). It extends from the thermopause, at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km (6,200 mi; 33,000,000 ft), where it merges into the solar wind.

What is the altitude range of the thermosphere?

1,600,000 to 3,300,000ft
The thermosphere is the second highest layer of Earth’s atmosphere and extends from the mesopause (which separates it from the mesosphere) at an altitude of approximately 260,000ft up to the thermopause at an altitude that ranges from 1,600,000 to 3,300,000ft.

What is the altitude of stratosphere?

The bottom of the stratosphere is around 10 km (6.2 miles or about 33,000 feet) above the ground at middle latitudes. The top of the stratosphere occurs at an altitude of 50 km (31 miles).

Why does 75 of the atmospheric mass lies within the troposphere?

Gravity, combined with the compressibility of air, causes the density of an atmosphere to fall off exponentially with height, such that Earth’s troposphere contains 80% of the mass and most of the water vapor in the atmosphere, and consequently most of the clouds and stormy weather.

What is the altitude of the atmosphere?

It extends from Earth’s surface to an average height of about 12 km (7.5 mi; 39,000 ft), although this altitude varies from about 9 km (5.6 mi; 30,000 ft) at the geographic poles to 17 km (11 mi; 56,000 ft) at the Equator, with some variation due to weather.

What is the altitude of each layer of the atmosphere?

Exosphere: 700 to 10,000 km (440 to 6,200 miles) Thermosphere: 80 to 700 km (50 to 440 miles) Mesosphere: 50 to 80 km (31 to 50 miles) Stratosphere: 12 to 50 km (7 to 31 miles)

What contains 75 percent of the atmospheric gases?

The troposphere
The troposphere contains 75 percent of atmosphere’s mass- on an average day the weight of the molecules in the air is14.

What makes up 0 to 4 percent of the atmosphere?

CO2 makes up only about 0.04% of the atmosphere, and water vapor can vary from 0 to 4%. But while water vapor is the dominant greenhouse gas in our atmosphere, it has “windows” that allow some of the infrared energy to escape without being absorbed.

What gas makes up 21% of the atmosphere?

oxygen
Air is mostly gas It’s a mixture of different gases. The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

Why is oxygen only 21 percent?

So how did Earth end up with an atmosphere made up of roughly 21 percent of the stuff? The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

Why is the 75% atmospheric mass found in the troposphere?

Earth as a Planet Gravity, combined with the compressibility of air, causes the density of an atmosphere to fall off exponentially with height, such that Earth’s troposphere contains 80% of the mass and most of the water vapor in the atmosphere, and consequently most of the clouds and stormy weather.

What percent of the atmosphere is the stratosphere?

19 percent
Stratosphere. The Stratosphere extends around 31 miles (50 km) down to anywhere from 4 to 12 miles (6 to 20 km) above the Earth’s surface. This layer holds 19 percent of the atmosphere’s gases but very little water vapor.

What percent of atmosphere is oxygen?

21 percent
The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

What makes up the remaining 1% of the atmosphere?

Ozone in the stratosphere forms the ozone layer, which is crucial for the survival of life at the Earth’s surface. Argon makes up about 1% of the atmosphere and comes mostly from the decay of potassium in the Earth’s crust. It is an inert gas, which means that it does not react with other chemicals.