Question

Write about the composition of the Atmosphere.

Answer 1

1. The atmosphere is a mixture of gases, water vapor, and dust particles in different proportions.
2. Nitrogen (78%) and Oxygen (21%) are permanent gases of the atmosphere.
3. They constitute 99% of the total composition and their percentages always remain the same without any change.
4. The remaining one percentage is occupied by Argon (0.93%) Carbon di-oxide (0.03%), Neon (0.0018%), Helium (0.0005%), Ozone (0.00006%) and Hydrogen (0.00005%).
5. Krypton, Xenon, and Methane are also present in traces.
6. Water vapor (0-0.4%) is also found in the atmosphere, which plays an important role in predicting weather phenomena.
7. The other solid particles present in the atmosphere includes dust particles, salt particles, pollen grains, smoke, soot, volcanic ashes, etc.
8. Oxygen is most important for living organisms
9. CO₂ absorbs heat and keeps the atmosphere warm by insulation and radiation
10. Nitrogen acts as a diluent and is chemically inactive.
11. Ozone helps in protecting the earth from radiation.
12. The solid particles in the atmosphere act as nuclei on