Details about Atmosphere

2. An atmosphere is a layer of gas or layers of gases that
envelope a planet, and is held in place by the gravity of the
planetary body. A planet retains an atmosphere when the
gravitational force is high and the temperature of the
atmosphere is low. Wikipedia

3. • Gases
• Water Vapour
• Particulate Matter
• Dust Partials
GASES
WATER VAPOUR
PARTICULATE
DUST PARTICLES

4. Constituent Formula Percentage by volume
Nitrogen N₂ 78.08
Oxygen O₂ 20.95
Argon Ar 0.93
Carbon dioxide CO₂ 0.030
Neon Ne 0.002
Helium He 0.0005
Krypton Kr 0.001
Xenon Xe 0.00009
Hydrogen H₂ 0.00005
 Composition of gases in the Atmosphere

5. Water vapor, water Vapour or aqueous vapor
is the gaseous phase of water. It is one state
of water within the hydrosphere. Water vapor
can be produced from the evaporation or
boiling of liquid water or from the sublimation
of ice. Water vapor is transparent, like most
constituents of the atmosphere. Wikipedia

6. Particulate Matter
The solid particles present in the
atmosphere includes dust 3 particles ,
salt particles , pollen , smoke and soot
etc. These particulates help in scattering
of solar radiation , which adds 1 varying
colors to atmosphere . The sky appears
blue in colour due to selective scattering
of solar radiation by dust . Salt particles
become hygroscopic nuclei and helps in f
formation of clouds , water drops and
rain.

7. Atmosphere has enough capacity to keep small solid e particles ,
which originate from various sources including sea salts , fine soil ,
ash , pollen , dust , smoke - soot and disintegrated particles of
meteors . Dust particles are generally concentrated in the lower
layers of the atmosphere , yet , convectional air currents may
transport them to great altitudes . The higher concentration of dust
particles is found in sub - tropical and temperate regions due to dry
winds in comparison to equatorial and polar regions.