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Difficulty: MediumInternal and External Structure of the Earth

The atmosphere forms the gaseous outer envelope of the Earth, divided into distinct concentric layers based on temperature trends and physical characteristics. Arrange the four atmospheric layers listed below in sequence starting from the layer closest to the Earth's surface and moving progressively upward toward outer space. What is the correct order of these atmospheric layers from lowest to highest altitude?

  1. 1Troposphere (layer where virtually all weather phenomena occur)
  2. 2Stratosphere (layer containing the protective ozone zone)
  3. 3Mesosphere (layer where meteorites burn up upon atmospheric entry)
  4. 4Thermosphere (layer containing ionized gas particles and extreme high temperatures)

Answer

The correct order of atmospheric layers from the Earth's surface outward is: Troposphere, Stratosphere, Mesosphere, and Thermosphere.
The correct sequence from lowest to highest altitude is Troposphere, Stratosphere, Mesosphere, and Thermosphere. The troposphere rests on the Earth's surface, followed by the stratosphere (containing the ozone layer), then the mesosphere (where meteors burn up), and finally the thermosphere extending into space.

Step-by-Step Solution

1
Identify the atmospheric layer directly in contact with the Earth's surface.
Troposphere (0 to 8–15 km altitude).
It contains the majority of the atmosphere's mass and is the site of all meteorological processes.
2
Identify the second layer situated immediately above the tropopause.
Stratosphere (15 to 50 km altitude).
It houses the ozone layer which absorbs harmful ultraviolet radiation.
3
Identify the third layer located above the stratopause.
Mesosphere (50 to 85 km altitude).
It is the coldest layer of the atmosphere where incoming meteors burn up due to friction.
4
Identify the fourth layer extending above the mesopause toward space.
Thermosphere (85 to 600+ km altitude).
It absorbs high-energy solar X-rays and ultraviolet radiation, resulting in high thermal energy.

Key Concept

Vertical stratification and arrangement of atmospheric layers
Estimated Time:1m 0s
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Topics

Internal and External Structure of the Earth

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