Atmosphere isa)It is the liquid crust or the hard top layer of the ear...
Atmosphere refers to the thin layer of air that surrounds the earth. It is a mixture of various gases, such as nitrogen, oxygen, carbon dioxide, and water vapor, along with some other trace gases.
Importance of Atmosphere:
The atmosphere plays a crucial role in sustaining life on earth. It helps to regulate temperature, protect us from harmful radiation, and provides the air we breathe. It also plays a vital role in the water cycle, which is essential for life on earth.
Layers of Atmosphere:
The atmosphere is divided into several layers based on their altitude and temperature. The layers are:
1. Troposphere: This is the lowest layer of the atmosphere and extends up to 10-15 km from the earth's surface. It is the layer where we live and where weather takes place.
2. Stratosphere: This layer lies above the troposphere and extends up to 50 km from the earth's surface. It contains the ozone layer, which protects us from harmful ultraviolet radiation.
3. Mesosphere: This layer lies above the stratosphere and extends up to 85 km from the earth's surface. It is the layer where meteors burn up.
4. Thermosphere: This layer lies above the mesosphere and extends up to 600 km from the earth's surface. It is the layer where the aurora borealis and aurora australis occur.
5. Exosphere: This is the outermost layer of the atmosphere and extends up to 10,000 km from the earth's surface. It gradually merges with the vacuum of space.
Conclusion:
In conclusion, the atmosphere is the thin layer of air that surrounds the earth and is essential for sustaining life on earth. It is divided into several layers based on their altitude and temperature, and each layer plays a crucial role in regulating the earth's environment.
Atmosphere isa)It is the liquid crust or the hard top layer of the ear...
The Earth's atmosphere is a thin layer of gases that surrounds the Earth. It composed of 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide, and trace amounts of other gases. This thin gaseous layer insulates the Earth from extreme temperatures; it keeps heat inside the atmosphere and it also blocks the Earth from much of the Sun's incoming ultraviolet radiation.