NCERT Class 6 Geography Chapter 6 Extra Questions covers all the topics in a precise and simplified way. NCERT Class 6 Geography Chapter 6 Extra Questions are easy to understand and easy to learn from the chapter Major Landforms of the Earth.

NCERT Class 6 Geography Chapter 6 Extra Questions

1. What are the various types of landforms?
Answer
: The earth has an infinite variety of landforms. Some of the important landforms are:
(1) Mountains & Mountain Ranges
(2) Hills
(3) Plateaus
(4) Peninsulas
(5) Islands
(6) Basins
(7) Isthmus
(8) Straits
(9) River Deltas & Mouth of Rivers
(10) Valleys, etc.

2. What is the difference between a mountain and a hill?
Answer
:

MountainsHills
Mountains are higher with peaks.Hills are not high and they don’t have peaks.
Mountains are elevated higher than 600 m.Hills are not higher than 600 m.

3. What is the difference between a Strait and an Isthmus?
Answer
:

IsthmusStrait
An Isthmus is a narrow strip of land that joins two big landmasses and separates two big water bodies.A Strait is a narrow passage of water that joins two big water bodies and separates two big landmasses.

4. Define Plateaus?
Answer:
Plateaus are flat-topped land raised above the surrounding area.

5. How are landforms are created?
Answer
: Landforms are the result of two processes.

Internal ProcessesExternal Processes
The internal process is the continuous movement inside the Earth’s surface.The external process is the continuous wearing down and rebuilding of the land surface.
Internal processes are caused by the Tectonic plate movement.External processes are caused by Water, Air, and Ice.
Internal Processes lead to upliftment and sinking of the Earth’s surface.Erosions and Depositions are examples of external processes.

6. What are the types of landforms based on elevation and slope?
Answer
: Landforms based on election and slope of the landforms:
(1) Mountains
(2) Plateaus
(3) Plains

7. Describe Mountains.
Answer
: A mountain is a natural elevation of the Earth’s surface. Mountains are higher than the surrounding areas. Mountains may have a small summit and broad base. The arrangement of mountains in a line is called mountain range.
There are 3 types of mountains:
(1) Fold Mountains
(2) Block Mountains
(3) Volcanic Mountains

8. Why do fewer people live in mountain areas?
Answer
: Population is less in mountain areas because of:
(1) Harsh climate
(2) Less availability of land for farming
(3) Difficulty in constructing houses, roads, etc.

9. Compare different types of mountains.
Answer
:

Fold Mountains:
Fold mountains are formed by the effects of folding on layers within the upper part of the Earth’s crust.

Examples:
(1) The Himalayas (Asia)
(2) The Alps (Europe)
Block Mountains:
Block mountains are created when large areas are broken and displaced vertically.
The uplifted blocks are termed as horsts and the lowered blocks are called graben.

Examples:
(1) The Rhine valley (Germany)
(2) The Vosges mountain (France)
Volcanic Mountains:
Volcanic mountains are formed due to volcanic activity.

Examples:
(1) Mt.Kilimanjaro (Africa)
(2) Mt.Fujiyama (Japan)

9. How are plateaus useful to us?
Answer
:
(1) Plateaus are rich in mineral deposits.
(2) Several waterfalls provide scenic beauty for tourists.
(3) Lava plateaus are rich in black soil which is very fertile for cultivation.

10. What is plain?
Answer
: A plain is a vast stretch of flat lat. It is mostly formed by rivers and their tributaries. Plains are usually fertile lands


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