Hi everyone in these slides we are going to familiar with the segments of Natural environment i.e, Atmosphere........we will have a quick review on the atmosphere that will enhance ur information.......and we have included some value points to enhance your understanding....... Thank u!

1. ATMOSPHERE
ATMOSPHERE
By: Jitendra Saini

2. Contents:
• Introduction
• Atmosphere
• Layers of Atmosphere
• Vertical Structure of
Atmosphere
• with variation In Temperature
• Functions of Atmosphere
• Summary

3. Bio-physical or Natural
Environment consist of
Three basic segments:
1. Atmosphere
2. Hydrosphere
3. Lithosphere
4. Biosphere is often
considered the
Fourth segment

4. Atmosphere
Definition: Atmosphere is the
gaseous envelope Of the Earth.

5. Vertical Structure Of Atmosphere
Atmosphere extends
upto 500km
vertically and
consists of following
5 layers:
• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere
• Exosphere

6. Vertical Structure Of Atmosphere With Temperature Variation Pattern Across Different Layers and Related
Phenomena

7. • Composed of H and He - Thermosphere
• Most affected by air pollution – Troposphere
• Protect the organisms from the harmful Rays of sun –
Stratosphere
• Contains the most dense air – Troposphere
• Contains the least dense/thinnest air - Thermosphere
• Coldest layer of atmosphere – Mesosphere
• Contains Ozone(O3) – Stratosphere
• Where meteors burns – Mesosphere
• Where air planes and jet planes fly – Stratosphere
• Weather changes happens – Troposphere
• True and false:
• Nitrogen is the most abundant gas in the atmosphere-
True
• Methane is not a green house gas – false
Let’s summarizeMajor functions of Atmosphere
are:
• Feeding Functions: Atmosphere
contains O2 and CO2 which are
essential for respiration and
photosynthesis.
• Protection functions: It protects
the earth from extreme
Temperature & maintain
moderate temperature (17°C).
It also protects from harmful
UV-rays & cosmic rays and
falling meteors.

8. The End