What is the atmosphere that surrounds the Earth?

Earth’s atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth’s gravity. It contains roughly 78\% nitrogen and 21\% oxygen 0.97\% argon and carbon dioxide 0.04\% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.

Why the layers of the atmosphere have different temperature?

Different temperature gradients create different layers within the atmosphere. The lowest layer is the troposphere where most of the atmospheric gases and all of the planet’s weather are located. The troposphere is heated from the ground, so temperature decreases with altitude.

Why are some layers of the atmosphere warmer compared to others?

The base of this layer is warmer than its top because the air is heated by the surface of the Earth, which absorbs the Sun’s energy. Above the troposphere lies the stratosphere where jet airplanes fly. Temperatures increase with altitude because of increasing amounts of ozone.

How does atmosphere maintain the temperature of the earth?

Along with the oceans, the atmosphere keeps Earth’s temperatures within an acceptable range. Greenhouse gases trap heat in the atmosphere so they help to moderate global temperatures. Without an atmosphere with greenhouse gases, Earth’s temperatures would be frigid at night and scorching during the day.

What do you mean by atmosphere?

An atmosphere is the layers of gases surrounding a planet or other celestial body. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.

What is Earth’s atmosphere made up of?

The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

What is atmosphere write about its different layers?

The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth’s surface is called the exosphere.

Which of the following is not the layer of atmosphere?

Lithosphere is not a layer of the earth’s atmosphere. It is the rigid outer part of the earth, consisting of the crust and upper mantle.

What layer of the atmosphere is the hottest?

The thermosphere
The thermosphere is often considered the “hot layer” because it contains the warmest temperatures in the atmosphere.

In which of these layers of the atmosphere is it generally colder at higher altitudes?

In which of these layers of the atmosphere is it generally colder at higher altitudes? troposphere.

Why does the earth have an atmosphere?

Our atmosphere protects the Earth from the harsh rays of the sun and reduces temperature extremes, acting like a duvet wrapped around the planet. Mars and Venus have atmospheres, but they cannot support life (or, at least, not Earth-like life), because they don’t have enough oxygen.

What is the thickness of the Earth’s atmosphere?

The Earth is a sphere with a roughly 8000 mile diameter; the thickness of the atmosphere is about 60 miles. In this picture, taken from a spacecraft orbiting at 200 miles above the surface, we can see the atmosphere as the thin blue band between the surface and the blackness of space.

Which layer of the atmosphere is the most dense?

Diagram of the layers within Earth’s atmosphere. 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.

What are the different layers of the atmosphere on Earth?

Earth’s Atmospheric Layers. Diagram of the layers within Earth’s atmosphere. Troposphere. 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.

How much of the Earth’s atmosphere is contained below 10 km altitude?

About 80\% of the mass of earth’s atmosphere is contained below 10 km altitude. The atmosphere of earth is mostly composed of many gases including nitrogen, oxygen, carbon dioxide. This helps protect living organisms from genetic damage by solar ultraviolet radiation, solar wind and cosmic rays.