Atmosphere – Basic Concept and Current Relevance
This page provides a clear understanding of the atmosphere along with its relevance in current environmental issues. It is useful for UPSC, PSC, SSC and other competitive exams.
Current Relevance
- Rising global temperatures due to climate change
- Protection and recovery of the ozone layer
- Increase in heat waves and extreme weather events
- Air pollution and its impact on atmospheric quality
What is Atmosphere?
The atmosphere is a layer of gases surrounding the Earth. It plays a vital role in sustaining life by providing air, regulating temperature, and protecting the planet from harmful radiation.
Composition of Atmosphere
- Nitrogen (N₂) – 78%
- Oxygen (O₂) – 21%
- Other gases (Argon, CO₂, etc.) – 1%
This composition is essential for maintaining life and ecological balance.
Importance of Atmosphere
- Protects Earth from harmful solar radiation (UV rays)
- Regulates global temperature
- Provides oxygen for living organisms
- Supports the water cycle (rainfall system)
Exam Focus Points
- Atmosphere = Layer of gases around Earth
- Nitrogen is the dominant gas
- Acts as a protective shield
- Essential for life support
Note
This is a foundational page. In the next section, we will study the layers of the atmosphere in detail, which is very important for competitive exams.
Shaktimatha Learning
Geography | Environment | Competitive Exams
Geography | Environment | Competitive Exams
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