Question
Download Solution PDFWhich of the following layers of Earth’s atmosphere can be depleted by the use of chlorofluorocarbons?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Ozone.
Key Points
- Ozone is a highly reactive gas composed of three oxygen atoms.
- It is both a natural and a man-made product that occurs in the Earth's upper atmosphere.
- Ozone (composed of three atoms of oxygen) occurs both in the Earth's upper atmosphere (stratosphere) and at ground level ( troposphere).
- Ozone-depleting gases like chlorofluorocarbons (CFCs), HCFCs, halons, destroy this protective shield and causes a hole in the ozone.
- Ozone usually is manufactured by passing an electric discharge through a current of oxygen or dry air.
- It occurs naturally in small amounts in Earth’s stratosphere, where it absorbs solar ultraviolet radiation, which otherwise could cause severe damage to living organisms on Earth’s surface.
Additional Information
| Ionosphere |
The ionosphere is an ionized part of the earth's upper atmosphere. From about 48 km to 965 km altitude a region. That includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation. |
| Troposphere |
The troposphere is the lowest layer of Earth's atmosphere and the site of all weather on Earth. The troposphere is bounded on the top by a layer of air called the tropopause, which separates the troposphere from the stratosphere, and on the bottom by the surface of the Earth. |
| Exosphere |
The exosphere is the outermost layer of the Earth's atmosphere. It starts at an altitude of about 500 km and goes out to about 10,000 km. Within this region particles of the atmosphere can travel for hundreds of kilometers in a ballistic trajectory before bumping into any other particles of the atmosphere. |
Last updated on May 26, 2025
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