Class 6 ch.air & atmosphere

 1. explain how the composition of air varies from place to place on earth & at lower and higher altitudes.

2.write the contribution of following scientists and the year of Discovery:

A.John Mayow

B.Joseph priestley

C.Antoine Lavosier

3. Distinguish between air and atmosphere. Explain composition of atmosphere and write about different layers of atmosphere and its basic functions.

4. How the atmosphere plays an important role in the survival of mankind?

5. Write different properties of air and prove them with the help of suitable activity.

6. Explain different components of air and mention its percentage composition. Draw a pie chart to show the components of air.

7. Explain the variation in composition of air with

A.altitudes

B.deep sea /oceans

C. In industrial areas

8. Write and explain experiments to study the following components of air:

A. Oxygen and nitrogen

B. Carbon dioxide

C. Water vapor

9. Write an explain the utility of following components of air:

A. Nitrogen

B. Oxygen

C. Carbon dioxide

D. Water vapour

E. Helium

F.neon

G Argon

H.xenon

I.radon

10. Name polluting gases along with its effects.

11. How will you prove that air is a mixture?

12. Write six applications of air.

13. Write the balance of components of air.