(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

Give a geographical reason for the following:

In Equatorial regions the sky often remains overcast with clouds.

Give a geographical reason for the following:

Condensation is the reverse process of evaporation.

With reference to condensation, define the following :
Process of condensation.

Explain the atmospheric conditions that favour condensation.

With reference to condensation, define the following :
Forms of Condensation.

What is weathering?

What is known as exfoliation?

What is known as oxidation?

What are exogenic forces?

What is the chief characteristic of weathering in tropical climates?

What is known as mass wasting?

Name any two slow movements of mass wasting.

Give one example of rapid mass movement.

What is known as Sheet Wash?

Give a technical term for the following:
Disintegration or decomposition of rock.

Give a technical term for the following:
Peeling off of the outer layer of rock through contraction and expansion.

Give a technical term for the following:
Expansion of minerals in rocks on coming into contact with rainwater.

Say whether the following is ‘True’ or ‘False’.
 In dry climates mechanical weathering is dominant.

Say whether the following is ‘True’ or ‘False’.
Shear plane is the surface on which movement of a landslide takes place as a result of its breaking off.

Say whether the following is ‘True’ or ‘False’.
 External forces are engaged only in erosion