Class 11 Geography Important Chapter 8 Geomorphic Processes

Class 11 Geography Important Chapter 8 Geomorphic Processes Solutions English Medium As Per AHSEC New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters ASSEB Class 11 Geography Important Solutions and select need one. AHSEC Class 11 Elective Geography Additional Notes English Medium Download PDF. HS 1st Year Finance Important Solutions in English.

Class 11 Geography Important Chapter 8 Geomorphic Processes

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. ASSEB Class 11 Elective Geography Additional Question Answer are part of All Subject Solutions. Here we have given HS 1st Year Elective Geography Important Notes in English for All Chapters, You can practice these here.

Geomorphic Processes

Chapter: 8

THIRD UNIT : GEOMORPHIC FEATURES AND THEIR EVOLUTIONARY PROCESS

IMPORTANT QUESTION AND ANSWER

Answer The Following Questions:

1. What is meant by Denudation?

Ans: The loose and broken materials produced as a result of weathering are called denudation.

2. What are the factors responsible for the development of landforms?

Ans: The factors responsible for the development of landforms are two — internal forces and external forces.

3. Mention the types of weathering processes according to the action of related factors.

Ans: The types of weathering processes are — physical weathering, chemical weathering, and biological weathering.

4. What is meant by Weathering?

Ans: The process by which the solid rocks on the Earth’s surface are broken down into small particles under the influence of climatic and biological factors is called weathering.

5. What is Hydration?

Ans: The type of chemical weathering in which rocks react with water and start to disintegrate is called hydration.

6. What is Soil Creep or Mass Movement?

Ans: When the soil layer becomes heavier and softer due to saturation with water, it can no longer remain stable at a high slope and moves downward to form a mound-like deposit. This is called soil creep or mass movement.

7. What happens when oxidized minerals are kept in an oxygen-free environment (like underwater)?

Ans: When oxidized minerals are kept in an oxygen-free environment (like underwater), oxidation reactions start within them.

8. Give an example of transportation.

Ans: In a river, the flowing water erodes the banks and transports materials such as sand and soil from one place to another — this is an example of transportation.

9. How many main types of landslides are there?

Ans: There are two main types of landslides.

10. What happens when the temperature of seawater falls below the dew point?

Ans: When the temperature of seawater falls below the dew point, ice is formed on the sea surface.

Long Question & Answer:

1. What are the causes of landform development?

Ans: The Earth’s landforms develop under the influence of both internal and external forces.

Internal forces originate from within the Earth, such as tectonic movements, volcanic eruptions, and earthquakes. These create mountains, valleys, and other land structures.

External forces act from outside the Earth and include rivers, wind, glaciers, and biological factors. They cause erosion, transportation, and deposition, shaping features like river valleys, beaches, and sand dunes. Thus, landform development results from the combined action of internal and external forces.

2. What is Weathering and how does it occur?

Ans: Weathering is the process of breaking down rocks into smaller fragments by physical, chemical, and biological means.Physical weathering happens due to temperature changes, frost, or mechanical stress.Chemical weathering occurs when rocks react with water, gases, or acids, altering their composition.Biological weathering results from plant roots and microorganisms breaking rocks apart. This process gradually weakens the rocks, creating soil and modifying the landscape.

3. How do glaciers influence the development of landforms?

Ans: Glaciers play a major role in shaping landforms through erosion, transportation, and deposition. They scrape and polish rock surfaces as they move. Glacial erosion forms valleys and depressions. Deposited materials create moraines and glacial mounds.

Examples include cirques, U-shaped valleys, and glacial lakes.

4. How does biological activity help in landform development?

Ans: Biological activity contributes to landform development through plant and animal action.Roots of trees grow into cracks of rocks, breaking them apart. Decomposing organisms help in soil formation. Burrowing animals loosen soil and promote erosion. Thus, biological processes accelerate both weathering and soil formation.