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Question

Difficulty: EasyPhysical Geography of the World

Which layer of the Earth's atmosphere contains the ozone layer that absorbs harmful ultraviolet radiation from the Sun?

  1. A
    Troposphere
  2. StratosphereAnswer
  3. C
    Mesosphere
  4. D
    Thermosphere

Answer

The stratosphere is the layer of Earth's atmosphere that contains the ozone layer.
The stratosphere extends from approximately 12 km to 50 km above Earth's surface and houses the ozonosphere. Ozone molecules in this layer absorb high-energy ultraviolet solar radiation, converting UV light into heat and heating the upper stratosphere.

Step-by-Step Solution

1
Identify the primary atmospheric layers in order from Earth's surface upwards.
The layers are the Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.
Establishing the vertical structure of the atmosphere helps locate specific chemical zones.
2
Determine the atmospheric altitude zone where ozone concentrated.
Ozone (O3O_3) concentration is highest between roughly 15 km and 35 km above the Earth's surface.
This altitude range falls directly within the stratosphere.
3
Confirm the functional role of the ozone layer within this layer.
Stratospheric ozone absorbs harmful high-energy ultraviolet radiation (UV-B and UV-C) from the Sun.
This protection prevents damaging radiation from reaching the troposphere and Earth's surface.

Key Concept

Atmospheric Stratification and Ozonosphere
Estimated Time:45s
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Topics

Physical Geography of the World

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