9th Class Social Studies | English Medium | Geography | 9th Class 2020 Syllabus | Digital Teacher
Digital Teacher・2 minutes read
The atmosphere is vital for life by providing oxygen and shielding Earth from harmful sun rays, while green plants use carbon dioxide, sunlight, and water to produce essential nutrients. The composition and structure of the atmosphere, along with planetary winds and various types of rainfall, all play significant roles in supporting life on Earth.
Insights
- The atmosphere, primarily composed of oxygen and nitrogen, is crucial for sustaining life by providing oxygen, shielding Earth from harmful sun rays, and supporting the growth of green plants that produce essential nutrients.
- Planetary winds like trade winds, westerlies, and polar winds are vital for distributing heat and moisture globally, influencing weather patterns and climate conditions across different regions through various types of rainfall, such as conventional, orographic, and cyclonic precipitation.
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Recent questions
What does the atmosphere provide for life on Earth?
Oxygen, protection from harmful sun rays, essential nutrients.
What are the main components of the atmosphere?
Oxygen, nitrogen, carbon dioxide, methane, water vapor.
How is the atmosphere structured?
Layers: homosphere (troposphere, stratosphere, mesosphere), heterosphere (thermosphere, exosphere).
What role do planetary winds play in the atmosphere?
Transport heat, moisture across the world.
How do different types of rainfall vary?
Conventional, orographic, cyclonic; influenced by temperature, pressure, wind.
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