Morning Star solutions for Total Geography [English] Class 9 ICSE chapter 9 - Weathering [Latest edition]

What is weathering?

Name three types of weathering. 

Give one point of difference between physical and chemical weathering.

What is known as exfoliation? Name the processes involved in it?

What is known as oxidation?

Briefly describe biological weathering.

What are exogenic forces?

What is called denudation? Name the processes involved in it.

Name the two processes of gradation.

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.

Give a technical term for the following:
The leveling of land surface by erosion and deposition.

Give a technical term for the following:
The process in which a landform of lower level is upgraded to a higher level.

Say whether the following is ‘True’ or ‘False’.
Temperature is not a factor in physical weathering.

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

Say whether the following is ‘True’ or ‘False’.
In Polar regions there is no chemical weathering.

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

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.

Describe the process of denudation and gradation.

Define weathering and describe the chief characteristics of weathering.

Distinguish between physical and chemical weathering.

Describe chemical weathering mentioning the processes involved in it.

What is the biological weathering? 

State the main agents of biological weathering.

Describe the chief characteristics of weathering in different climates.

State and explain the classification of mass movements.

Name two processes involved in denudation

What does the term denude mean?

What is weathering?

Name the gases involved in the process of chemical weathering.

In which region underground water is an effective agent of denudation.

Name few well known physical features caused by chemical weathering.

Why is mechanical weathering also known as physical weathering?

What is weathering? Illustrate the process graphically.

Distinguish between :
Weathering and Denudation

Distinguish between :
Loess and Alluvium.

On what factors does the weathering depend?

What do you understand by Denudation?

Name any two agents of denudation.

Name the gases which help in chemical weathering.

What is humus? How is it formed? What is its significance in soil formation?

What is a badland topography?

Explain the processes of physical weathering giving examples.

Distinguish between :
Weathering and Denudation

Distinguish between the following:
Mechanical Weathering’ and ‘Chemical Weathering’.

Distinguish between the following:
Sheet erosion and gully erosion.

What do you understand by the following term:|
Exfoliation

What do you understand by the following term:|
Regolith

What do you understand by the following term:|
Oxidation

What do you understand by the following term:|
Carbonation

What do you understand by the following term:|
Desilication

What do you understand by the following term:|
Humus

What are different types of soil according to their texture?

How are the different kinds of soils in Temperate zones formed?

Rewrite the following sentence, choosing the right word from the options given below:

_______is produced by the decayed organic material, including dead leaves, stems roots, living bacteria, fungi, worms, and other organisms.

Rewrite the following sentence, choosing the right word from the options given below:

_______refers to the gradual disintegration and decomposition of rocks which lie exposed to the elements of weather.

Rewrite the following sentence, choosing the right word from the options given below:

_______soils are those which are undisturbed by erosion or deposition.

Rewrite the following sentence, choosing the right word from the options given below:

_______ occurs when the water itself combines chemically with some element or mineral.

Rewrite the following sentence, choosing the right word from the options given below:

_______  is the chemical process in which some of the minerals are dissolved by the water.

Define the following term briefly:

Soil texture

Define the following term briefly:

Soil structure

Define the following term briefly:

Soil profile

Define the following term briefly:

Soil

Define the following term briefly:

Chernozems

What are the various factors governing the formation of soil? Which one is the most important and why?

Match the following pairs correctly:

Explain the processes of physical weathering giving examples.

Distinguish between :
Weathering and Denudation

Distinguish between :
Physical Weathering and Chemical Weathering.

Distinguish between the following:
Sheet erosion and gully erosion.

Distinguish between the following :
Granular Disintegration and Block Disintegration.

Distinguish between the following :
Solution and Hydration

Distinguish between the following :
Erosion and Weathering.

What do you understand by the following term:|
Exfoliation

What do you understand by the following term:|
Regolith

What do you understand by the following term:|
Oxidation

What do you understand by the following term:|
Carbonation

What do you understand by the following term:
Weathering

What do you understand by the following term:|
Humus

What do you understand by the following term:
Soil profile

What do you understand by the following term:
Landslide 

What do you understand by the following term:
Soil texture

What do you understand by the following term:
Gradation 

What do you understand by the following term:
Frost action 

Account for the two types of weathering.

How does frost action cause weathering?

Describe how changes of temperature lead to weathering.
OR
How do changing temperature lead to weathering?

Name the different processes of chemical weathering.

Describe the work of plants as agents of weathering.

Which human activities lead to weathering of rocks?

State the effects of weathering.

Give reasons for the following :
Change of temperature leads to physical weathering.

Give reasons for the following :
Presence of water aids chemical weathering.

Give reasons for the following :
Human activities encourage weathering.

Give reasons for the following :
Climate is the most important factor of soil formation.

Give reasons for the following :
Farmers are encouraged to adopt soil conservation methods.

Give reasons for the following :
A soil dominated by clay makes tilling difficult.

Give reasons for the following :
Grassland soils are less acidic than forest soils.

Explain the following terms.
Colloids

Explain the following terms.
Bases