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The thermosphere is the second-highest layer of Earth's atmosphere. It extends from the mesopause (which separates it from the mesosphere) at an altitude of about 80 km (50 mi; 260,000 ft) up to the thermopause at an altitude range of 500–1000 km (310–620 mi; 1,600,000–3,300,000 ft).
20 Αυγ 2024 · The envelope of gas surrounding the Earth changes from the ground up. Five distinct layers have been identified using thermal characteristics (temperature changes), chemical composition, movement, and density.
6 Οκτ 2023 · The exact altitude can vary based on solar activity. Its lower boundary is called exobase or exopause, and this is the altitude above which atmospheric temperature remains almost constant. The exosphere is the least dense layer of the atmosphere, comprised of mostly helium and hydrogen.
2 Οκτ 2019 · Diagram of the layers within Earth’s atmosphere. NASA. Earth’s atmosphere has five major and several secondary layers. From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. Troposphere.
This chart illustrates how the temperature of the atmosphere goes either up or down with increasing altitude, with changes in the direction of this trend marking the boundaries between the...
22 Ιαν 2013 · 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.
The atmosphere is vital for life on earth, as it contains the oxygen we need to live. It also protect us from harmful ultraviolet solar radiation. Earth's atmosphere is built up of 78.8% Nitrogen and 20.95% Oxygen.
