Which layer of the atmosphere makes radio communication possible?

Important Questions on Composition and Structure of the Atmosphere

HARD

7th CBSE

IMPORTANT

New Longman Vistas>Chapter 4 - Composition and Structure of the Atmosphere>Exercises>Q 1

With the help of a diagram describe the composition of the atmosphere.

HARD

7th CBSE

IMPORTANT

New Longman Vistas>Chapter 4 - Composition and Structure of the Atmosphere>Exercises>Q 2

How is the troposphere important for us?

HARD

7th CBSE

IMPORTANT

New Longman Vistas>Chapter 4 - Composition and Structure of the Atmosphere>Exercises>Q 3

Why is the thermosphere also called 'ionosphere'?

HARD

7th CBSE

IMPORTANT

New Longman Vistas>Chapter 4 - Composition and Structure of the Atmosphere>Exercises>Q 1

Distinguish between the mesosphere and the thermosphere.

HARD

7th CBSE

IMPORTANT

New Longman Vistas>Chapter 4 - Composition and Structure of the Atmosphere>Exercises>Q 2

Examine the significance of the atmosphere.

HARD

7th CBSE

IMPORTANT

New Longman Vistas>Chapter 4 - Composition and Structure of the Atmosphere>Exercises>Think and answer

Why does about $99\%$ of the total mass of the atmosphere lie within a height of $32$ km from the Earth's surface?

HARD

7th CBSE

IMPORTANT

New Longman Vistas>Chapter 4 - Composition and Structure of the Atmosphere>Life Skills>Environmental Concern

Suggest various ways to reduce carbon dioxide emissions in our day-to-day activities.