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Difficulty: EasyAtmosphere and Weather

Arrange the following major layers of Earth's atmosphere in order of increasing altitude, starting from the layer closest to Earth's surface at the bottom to the outermost layer at the top.

  1. 1Troposphere
  2. 2Stratosphere
  3. 3Mesosphere
  4. 4Thermosphere

Answer

Troposphere, Stratosphere, Mesosphere, Thermosphere
The correct ascending order from Earth's surface upward is Troposphere (0–12 km), Stratosphere (12–50 km), Mesosphere (50–85 km), and Thermosphere (85–600 km).

Step-by-Step Solution

1
Identify the atmospheric layer closest to the ground.
Troposphere is at 0 to 12 km altitude.
The troposphere is in direct contact with Earth's surface and contains nearly all weather phenomena.
2
Identify the layer directly above the troposphere.
Stratosphere is at 12 to 50 km altitude.
The stratosphere sits immediately above the tropopause and contains the protective ozone layer.
3
Identify the middle layer directly above the stratosphere.
Mesosphere is at 50 to 85 km altitude.
The mesosphere is the middle atmospheric layer where most meteors burn up upon entry.
4
Identify the high-altitude layer directly above the mesosphere.
Thermosphere is at 85 to 600 km altitude.
The thermosphere is the upper atmospheric layer characterized by extremely high temperatures and the presence of the aurora.

Key Concept

Atmospheric Layering by Altitude
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Topics

Atmosphere and Weather

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