RBSE Solutions Class 11 Physical Geography Chapter 8 Major Landforms

RBSE Class 11 Physical Geography Chapter 8 Text Book Questions

RBSE Class 11 Physical Geography Chapter 8 Multiple Choice Questions

Question 1. Which are the First Order Relief?
(a) Delta and Valley
(b) Continent and Ocean
(c) Mountain and Plateau
(d) Plains and Coast
Answer: (b) Continent and Ocean
In simple words: The largest landforms on Earth, like continents and oceans, are known as First Order Relief features. They are the biggest features of the Earth's surface.

🎯 Exam Tip: Remember the three orders of relief features: First Order (continents, oceans), Second Order (mountains, plateaus, plains), and Third Order (valleys, dunes, etc.) for a clear classification.

Question 2. Which of these is not endogenetic force?

🎯 Exam Tip: Endogenetic forces come from inside the Earth and cause major landform changes, while exogenetic forces act on the surface.

Question 3. Which is an example of Inter mountain Plateau out of the following?
(a) Patagonia Plateau
(b) Tibetan Plateau
(c) Laos Plateau
(d) Malagasy Plateau
Answer: (b) Tibetan Plateau
In simple words: The Tibetan Plateau is an example of a plateau found between mountain ranges. It is surrounded by high mountains on all sides.

🎯 Exam Tip: Intermountain plateaus are located between mountain ranges, like a high flat area surrounded by hills.

Question 4. Which is an example of Accumulated Mountain out of the following?
(a) Himalaya
(b) Fujiyama of Japan
(c) Ural
(d) Andes
Answer: (b) Fujiyama of Japan
In simple words: Mount Fujiyama in Japan is a mountain formed by the piling up of material like volcanic ash. These are created by nature's building processes.

🎯 Exam Tip: Accumulated mountains are formed by the collection and deposition of various materials, often from volcanic eruptions or wind-blown sand.

Question 5. Which is an example of Humid Plateau out of the following?
(a) Potwar Plateau
(b) Gobi Plateau
(c) Cherrapunji Plateau
(d) Tarim Plateau
Answer: (c) Cherrapunji Plateau
In simple words: Cherrapunji Plateau is an example of a humid plateau, meaning it gets a lot of rainfall. Its moist climate makes it different from dry plateaus.

🎯 Exam Tip: Humid plateaus are characterized by high rainfall and humidity, often resulting in distinct erosional features and vegetation.

RBSE Class 11 Physical Geography Chapter 8 Very Short Answer Type Questions

Question 1. Which are the new mountains of the world?
Answer: The new mountains of the world are folded mountains. These mountains are formed by the folding of the Earth's crust due to internal forces.
In simple words: Fold mountains, like the Himalayas, are considered the new mountains on Earth.

🎯 Exam Tip: When asked about new mountains, always remember the category of "Folded Mountains" as they are geologically younger than other types.

Question 3. In which type of valley does the Narmada River flow?
Answer: The Narmada river flows from east to west through a Rift Valley. This valley was created by the process of faulting in the Earth's crust.
In simple words: The Narmada River flows in a Rift Valley, which is a valley formed by cracks in the Earth.

🎯 Exam Tip: Rift valleys are formed by tectonic faulting, where land blocks move apart or sink. The Narmada River is a classic example of a river flowing through such a valley.

Question 4. What is Residual Mountain?
Answer: Residual Mountains are the remaining parts of older mountains that have been worn down over time by natural forces like wind and water. These are usually made of strong, hard rocks that resisted erosion, while the softer surrounding areas were eroded away.
In simple words: Residual mountains are what's left of old mountains after wind, water, and ice have worn them down.

🎯 Exam Tip: Residual mountains are a testament to the power of erosion, leaving behind only the most resistant rock formations.

Question 5. What is Piedmont Plateau?
Answer: A Piedmont Plateau is a plateau located at the foot of mountains. It has mountains on one side and a sea or plain on the other side. This type of plateau is found at the base of larger mountain ranges.
In simple words: A Piedmont Plateau is a flat area found at the bottom of mountains, often next to a plain or sea.

🎯 Exam Tip: Piedmont plateaus get their name from "foot of the mountain" and are often formed by sediments deposited by rivers flowing from the mountains.

RBSE Class 11 Physical Geography Chapter 8 Short Answer Type Questions

Question 1. Write the names of Hercynian Mountains.
Answer: About 22 million years ago, mountain-building events known as Hercynian, Variscan, and Armorican collisions formed folded mountains. Examples include the Altai, Khingan, and Nanshan Mountains in Asia, the Eastern Cordillera Mountains in Australia, and the Panine and Harz Mountains in Europe.
In simple words: Hercynian mountains include ranges like the Altai in Asia and the Harz in Europe, formed by ancient mountain-building events.

🎯 Exam Tip: Hercynian mountains are older folded mountains, important for understanding Earth's geological history and the formation of continents.

Question 2. Explain Glacial Plateau.
Answer: Glacial Plateaus are flat areas formed by the erosion of glaciers in cold, high-latitude regions or high-altitude areas. These plateaus have a flattened surface due to the grinding action of ice. Examples include the Plateau of Garhwal, Labrador, Scandinavia, Alaska, South-Eastern Plateau of Africa, Prussian Plateau in Germany, and Gulmarg Plateau in Kashmir, as well as the Plateau of Antarctica.
In simple words: Glacial Plateaus are flat lands made by glaciers moving and eroding the ground in very cold or high places.

🎯 Exam Tip: When describing glacial plateaus, emphasize the role of ice erosion in shaping their flat, often smooth, landscapes in cold environments.

Question 4. What is the Ansequent Valley?
Answer: An Ansequent Valley is formed when a river continues to flow in its existing valley even after the landmass it crosses has been uplifted. These valleys are created when a previous river maintains its path despite changes in the surrounding land's elevation.
In simple words: An Ansequent Valley is where a river keeps flowing in its old path, even if the land around it rises up.

🎯 Exam Tip: Ansequent valleys are a type of river valley where the stream's course is older than the geological structure it now crosses, indicating significant land uplift.

Question 5. What is the Mature Plateau? Give examples.
Answer: A Mature Plateau has a rough and uneven surface with steep slopes and sharp peaks that tend to expand over time. These plateaus' features vary depending on whether they are in dry (arid) or wet (humid) regions, and their edges often look like stairs. The Appalachian Plateau is an example of this type of plateau.
In simple words: A Mature Plateau is an old plateau with uneven land, steep slopes, and sharp points, often found in places like the Appalachian region.

🎯 Exam Tip: Mature plateaus show advanced stages of erosion, with deeply incised valleys and distinctive landforms, reflecting a long period of geological processes.

RBSE Class 11 Physical Geography Chapter 8 Essay Type Questions

Question 1. Classify the mountains.
Answer: Mountains are considered Second Order Relief features, formed by forces from inside the Earth. Not all mountains are alike; they differ in how they formed, their height, age, location, and rock type. Based on these factors, mountains worldwide are classified into the following types:

1. Folded Mountain: These are formed when Earth's crustal rocks are squeezed and folded by strong compression from within the Earth. The raised parts are called anticlines, and the sunken parts are called synclines. Over time, these folds are uplifted to form mountains. Examples include the Himalaya, Ural, and Andes mountains. They are considered new mountains, and their rocks typically do not contain fossils.

2. Dome-Shaped Mountain: These mountains form when hot magma rises inside the Earth but does not erupt. Instead, it pushes the surface rocks upwards, creating a dome shape. The Henry and Unta mountains in Utah, USA, are examples of this type.

3. Accumulated Mountain: These mountains are formed by the collection and piling up of debris and deposited materials carried by agents like air, rivers, glaciers, waves, and volcanoes. Mount Fujiyama in Japan, Mount Vesuvius in Italy, and Mount Kilimanjaro in Africa are examples of volcanic accumulated mountains.

4. Fault or Block Mountain: These mountains form when the land between two parallel cracks (faults) in the Earth's crust either rises up, or the land on both sides of the middle part sinks down. Because they are formed by faults, they are also called Fault Mountains.

5. Residual Mountain: Residual mountains are the remnants of old mountains that have been worn down by natural forces like rivers, wind, waves, and glaciers. These mountains are made of hard, resistant rocks that remain standing after the surrounding, softer areas have been eroded away. When a river erodes a plateau, the harder parts are left behind as residual mountains.
In simple words: Mountains are classified by how they formed: Folded (like Himalayas from squeezing), Dome-Shaped (like Henry Mountains from rising magma), Accumulated (like volcanoes from piled-up material), Fault or Block (from cracks in Earth's crust), and Residual (leftovers of old, eroded mountains).

🎯 Exam Tip: When classifying mountains, focus on the primary geological process of their formation. Provide at least one well-known example for each type to demonstrate understanding.

Question 2. Classify the plateaus on the basis of origin.
Answer: Plateaus are the Earth's Second Order Relief features, coming after mountains in terms of scale. Plateaus around the world differ based on how they originated, their climate, and how developed they are. Based on their origin, plateaus are classified as follows:

1. Lava Plateau: These plateaus are formed by the slow buildup of lava flows from old volcanic areas, erupting from cracks or vents. The nature of the lava (liquid or thick) determines if the plateau is wide or narrow, high or low. The Columbia Plateau and the Deccan Plateau in South India are key examples.

2. Glacial Plateau: These are formed by erosion from glaciers in high-latitude or high-altitude regions. The movement of glaciers grinds down rock ranges, creating flat surfaces. Examples include the Plateaus of Garhwal, Labrador, Scandinavia, Alaska, South-Eastern Plateau of Greenland, Canada, Prussian Plateau in Germany, and Gulmarg Plateau in Kashmir, as well as the Plateau of Antarctica.

3. Air-Made Plateau: Also called Loess Plateaus, these are formed by the massive accumulation of fine soil particles carried and deposited by wind, especially in desert regions. The Potwar Plateau in Pakistan, Loess Plateau in China, and parts of the Plateaus of Africa and North America are examples.

4. Water-Made Plateau: These plateaus form when sediments accumulated in the sea or a geosyncline are uplifted by internal Earth movements, raising the regular sea level. These are also known as marine-made plateaus.
In simple words: Plateaus are sorted by how they started: Lava plateaus (from cooled lava), Glacial plateaus (from ice erosion), Air-made plateaus (from wind-blown dust), and Water-made plateaus (from uplifted sea sediments).

🎯 Exam Tip: For classifying plateaus by origin, remember the four main geological agents: volcanic activity (lava), ice (glaciers), wind (air/loess), and water (marine/sedimentary uplift). Each has distinct characteristics.

1. Erosional Plains:
These plains are formed when erosion processes, such as those caused by rivers, glaciers, wind, or underground water, wear down the land over time. All relief features are eventually reduced to plains. These are further divided into:
(a) River Eroded Plains: Rivers erode uneven surfaces in their path, flattening them into plains. Monadnocks, isolated hills of resistant rock, are sometimes seen here. Examples include the Paris and London Basins.
(b) Glaciated Plains: Snow covers high mountain peaks and latitudes, and the rubbing action of glaciers flattens the land beneath. Glaciated plains are found in Canada, Sweden, and Finland.
(d) Karst Plains: In areas with limestone rocks, underground water erodes the surface, creating Karst Plains in the final stages of the erosion cycle. Examples are found in Nainital and Almora in India, and limestone regions of Yugoslavia and France.

2. Depositional Plains:
These plains are formed when materials like eroded debris are carried by agents of erosion and then deposited in lower areas. These plains can be categorized as:
(a) River-Deposited Plains: These are formed by rivers depositing eroded material from higher regions. Depending on their location, they are called Piedmont Plains (at mountain feet), Flood Plains (along river banks), and Delta Plains (at river mouths). The deltaic plains of the Ganga, Brahmaputra, and Nile rivers are very fertile and densely populated.
(b) Glacio-Fluvial Plains: These plains are formed by the deposition of material carried by glaciers. Dense, gravelly plains are created by pebbles, stones, and gravel beneath glaciers. Outwash plains are formed by fine soil deposited by meltwater from glaciers.
(c) Loess Plains: These plains are formed by the accumulation of fine soil carried by wind in desert regions. Prominent Loess plains are found in China, Argentina, and the Caspian Sea region.
(d) Lava-Made Plains: These plains are formed when lava, ash, and fine rock particles from volcanic eruptions accumulate over a large area. Lava-Made Plains are found in South India.
(e) Lake-Made Plains: When lakes are filled with river sediments, these accumulated materials form fertile plains. If the lake bottom is uplifted by internal movements, the water spreads, and the former lakebed becomes a plain. The Plain of Hungary and the Prairie region of America are examples.

Importance of Plains:
Plains offer ideal conditions for various human activities:
1. They are excellent for irrigation, supporting widespread agriculture.
2. They provide good pasture land for animals.
3. Plains are suitable for house construction and urban development due to their flat terrain.
4. They are ideal for building railway tracks and roadways, facilitating transportation.
5. Major civilizations throughout history have developed in plains because of these favorable conditions.
In simple words: Plains are flat lands made by erosion (wearing down) or deposition (piling up material). They are vital for farming, building, transport, and supporting human life due to their fertile land and easy access.

🎯 Exam Tip: When classifying plains, distinguish clearly between erosional (formed by removal of material) and depositional (formed by accumulation of material) types, providing examples for each and highlighting their importance to human civilization.

RBSE Class 11 Physical Geography Chapter 8 Other Important Questions

RBSE Class 11 Physical Geography Chapter 8 Multiple Choice Questions

Question 1. Into how many categories are the land forms divided?
(a) 2
(b) 3
(c) 4
(d) b
Answer: (b) 3
In simple words: Landforms are broadly split into three main groups: First Order (like continents and oceans), Second Order (like mountains and plateaus), and Third Order (smaller features like valleys).

🎯 Exam Tip: Remember the three orders of relief features: First, Second, and Third, which categorize landforms from global scale down to local features.

Question 2. Which order relief are the plains?
(a) First Order
(b) Second Order
(c) Third Order
(d) None of these
Answer: (b) Second Order
In simple words: Plains are large, flat areas of land and are categorized as Second Order Relief features.

🎯 Exam Tip: Plains, alongside mountains and plateaus, belong to the Second Order Relief features, which are major landforms on the continents.

Question 3. An example of the Folded Mountain is:
(a) Aravalli
(b) Fujiyama
(c) Uinta
(d) Himalaya
Answer: (d) Himalaya
In simple words: The Himalayas are a prime example of a folded mountain, formed when large parts of the Earth's crust collided and folded up.

🎯 Exam Tip: Folded mountains are typically associated with convergent plate boundaries where continental plates collide, leading to intense folding and uplift.

Question 4. Where is Kilimanjaro Mountain located?
(a) In India
(b) in America

🎯 Exam Tip: Kilimanjaro is a well-known volcano in Africa, famous as the continent's highest peak. Geographical locations are important for such questions.

Question. The one which is not included in the Alpine Mountain Period is :
(a) Kunlun
(b) Altai
(c) Alps
(d) Pyrennes
Answer: (b) Altai
In simple words: The Altai mountains were not formed during the Alpine Mountain Period, which is a more recent time of mountain building.

🎯 Exam Tip: The Alpine Orogeny formed many of the world's major young mountain ranges like the Alps, Himalayas, and Pyrenees; knowing which ranges are older helps differentiate them.

Question 6. Which type of plateau is Appalachian Plateau?
(a) New Plateau
(b) Mature Plateau
(c) Old Plateau
(d) Rejuvenated Plateau
Answer: (b) Mature Plateau
In simple words: The Appalachian Plateau is a type of mature plateau, meaning it has developed for a long time and shows features of older erosion.

🎯 Exam Tip: Plateaus are classified by their developmental stage (new, mature, old, rejuvenated) based on how long erosion has been shaping them.

Question 7. Karst Plains are formed by:
(a) River
(b) Glacier
(c) Wind
(d) Underground Water
Answer: (d) Underground Water
In simple words: Karst Plains are created by water flowing underground, which dissolves rocks like limestone to shape the land.

🎯 Exam Tip: Karst topography is characteristic of regions with soluble bedrock (like limestone) where underground water significantly influences landform development.

Question 8. Which has been called the Cradle of Civilizations?
(a) Mountains
(b) Plateaus
(c) Plains
(d) Oceans
Answer: (c) Plains
In simple words: Plains are called the "Cradle of Civilizations" because many ancient societies started and grew there, benefiting from flat, fertile land.

🎯 Exam Tip: Understand why plains are historically significant: their fertility, ease of construction, and accessible transport routes made them ideal for human settlement and civilization growth.

Matching Type Questions

Match the following:

Answer:
1. (i) Mountain - (d) First Order Relief
2. (Missing item, likely Plains/Plateaus) - (e) Second Order Relief
3. (iii) Delta - (a) Air - Made Plateau
4. (iv) Plateau of Labrador - (c) Glacial Plateau
5. (v) Loess Plateau - (b) Air - Made Plateau
In simple words: This match connects landforms to their types or formation processes: Mountains are First Order Relief. An unnamed second item is Second Order Relief. Delta matches with Air-Made Plateau, Labrador Plateau with Glacial Plateau, and Loess Plateau with Air-Made Plateau.

🎯 Exam Tip: For matching questions, carefully read both columns. Understand the key characteristics of each landform or geological period to make accurate pairings.

Question B. Column A (Name of Mountain) Column B (Mountain – Building Period)

🎯 Exam Tip: Knowing the geological periods associated with major mountain ranges helps in understanding Earth's dynamic history. Connect specific mountain chains to their correct orogenic phases.

Question 1. Why are the land forms formed on the earth's crust?
Answer: Landforms on the Earth's crust are shaped by the continuous interaction between internal forces (from within the Earth) and external forces (acting on the surface). These forces work together to create and change the planet's features.
In simple words: Landforms are created by two kinds of Earth forces: internal ones that push and lift, and external ones that erode and wear down.

🎯 Exam Tip: When discussing landform formation, always mention both endogenetic (internal) and exogenetic (external) forces, as they are fundamental drivers of geomorphic processes.

Question 2. What is the definition of the mountains given by Finch?
Answer: According to Finch, mountains are landforms that are 600 meters or more above sea level and have a slope between 260 to 350 degrees. This definition highlights their significant height and steepness.
In simple words: Finch said mountains are at least 600 meters high and have very steep sides, between 260 and 350 degrees.

🎯 Exam Tip: When quoting definitions, ensure accuracy in numerical values and specific terms used by the authority. Finch's definition emphasizes elevation and slope.

Question 3. On which basis are the mountains classified?
Answer: Mountains are classified based on several factors, including their formation process, their height, age, location, structure, and the type of rock (texture) they are made of.
In simple words: Mountains are sorted by how they were made, how tall they are, how old, where they are, and what type of rock they're from.

🎯 Exam Tip: Remember that mountain classification is multi-faceted, not just based on height. A good answer includes a range of criteria like origin, age, and structure.

Question 4. What is Syncline?
Answer: A Syncline is a downward, U-shaped fold that forms in layers of rock on the Earth's surface due to compression. It's a result of the Earth's rocks being squeezed and bent.
In simple words: A Syncline is a U-shaped dip in rock layers that happens when the Earth's crust is squeezed.

🎯 Exam Tip: Differentiate between anticlines (upward folds) and synclines (downward folds) clearly, understanding their formation through compressional forces.

Question 5. Name the major Accumulated Mountains of the world.
Answer: The major Accumulated Mountains around the world include Mount Fujiyama in Japan, Mount Vesuvius in Italy, and Mount Kilimanjaro in Africa. These mountains are built up by volcanic material or other deposited debris.
In simple words: Big accumulated mountains include Japan's Fujiyama, Italy's Vesuvius, and Africa's Kilimanjaro.

🎯 Exam Tip: Accumulated mountains are typically volcanic in origin, formed by eruptions. Naming specific examples like Fujiyama strengthens your answer.

Question 6. What does the term Block Mountain mean?
Answer: A Block Mountain is formed when the land between two parallel cracks (faults) in the Earth's crust is pushed upwards, or when the land on both sides of a central block sinks downwards. These mountains are created by faulting processes.
In simple words: A Block Mountain forms when a piece of land moves up or down between cracks in the Earth's crust.

🎯 Exam Tip: Block mountains are characterized by vertical movements along faults, contrasting with the folding seen in fold mountains.

Question 8. Which are the mountains formed in the Alpine Mountain Period? Name them.
Answer: The major mountains formed during the Alpine Mountain Period include the Himalayas, Arakan Yoma, Elburz, Hindu Kush, Rockies, Andes, Alps, Balkan, and Pyrenees. This period was the most recent major mountain-building event.
In simple words: Mountains like the Himalayas, Alps, and Andes were formed during the Alpine Mountain Period.

🎯 Exam Tip: The Alpine Orogeny is responsible for many of the world's most prominent and geologically youngest mountain ranges, which are still tectonically active.

Question 9. Into how many categories are mountains classified on the basis of their height?
Answer: Based on their height, mountains are classified into four main categories: High Mountains, Average High Mountains, Less High Mountains, and Low Mountains. This helps in organizing mountains by their elevation.
In simple words: Mountains are divided into four groups by height: High, Average High, Less High, and Low.

🎯 Exam Tip: Knowing the height classifications helps to categorize mountains more precisely beyond just calling them "tall" or "short."

Question 10. What does the term High Mountain mean?
Answer: The term High Mountain refers to mountains that have a height of more than 6,000 feet or more than 2,000 meters above sea level. These are the tallest peaks on Earth.
In simple words: High Mountains are very tall, standing over 6,000 feet or 2,000 meters high.

🎯 Exam Tip: Providing specific height thresholds (both in feet and meters) for "High Mountains" demonstrates precise geographical knowledge.

Question 11. Define the Plateau.
Answer: A Plateau is an elevated part of the Earth's surface that has a flat and broad top surface, and its edges typically have steep slopes. It's like a high tableland.
In simple words: A plateau is a high, flat area of land with steep sides.

🎯 Exam Tip: Key characteristics of a plateau are its elevation, flat top, and steep sides. Avoid confusing it with a mountain (pointed peak) or a plain (low relief).

Question 12. Into how many parts are the plateaus classified on the basis of their origin?
Answer: Based on their origin, plateaus are classified into four main parts: Lava-Made Plateau, Glacial Plateau, Air-Made Plateau, and Water-Made Plateau. Each type is formed by a different geological process.
In simple words: Plateaus are sorted into four types based on how they formed: by lava, glaciers, wind, or water deposits.

🎯 Exam Tip: When classifying plateaus by origin, remember the primary geological agent (volcanic activity, ice, wind, water) responsible for their formation.

Question 14. Into how many types are the plateaus classified on the basis of location?
Answer: Based on their location, plateaus are classified into three main types: Intermountain Plateau, Piedmont Plateau, and Continental Plateau. These categories describe where they are found in relation to other landforms.
In simple words: Plateaus are classified by their location into three types: between mountains, at mountain feet, or covering large land areas.

🎯 Exam Tip: Differentiate between plateaus by location: intermountain (surrounded by mountains), piedmont (at the base of mountains), and continental (large, extensive landmasses).

Question 15. What are Continental Plateaus?
Answer: Continental Plateaus are large plateaus that stretch across a significant portion of a country or an entire continent. They are extensive, elevated landmasses.
In simple words: Continental Plateaus are huge flat lands that cover big parts of countries or continents.

🎯 Exam Tip: Continental plateaus are typically broad, stable areas of the Earth's crust, often found far from mountain belts and characterized by their vast extent.

Question 16. What is a Snowy plateau?
Answer: A Snowy Plateau is a plateau where most of its area remains covered with snow throughout the year due to extremely cold weather conditions. These are found in high-latitude or high-altitude cold regions.
In simple words: A Snowy Plateau is a high, flat land covered mostly by snow all year because it's very cold.

🎯 Exam Tip: Snowy plateaus are defined by their persistent snow cover, which is a direct result of their location in polar or high-alpine environments.

Question 17. Into how many types are the plateaus classified on the basis of stage of development?
Answer: Based on their stage of development, plateaus are classified into four types: New Plateau, Mature Plateau, Old Plateau, and Rejuvenated Plateau. These stages reflect the impact of erosion over time.
In simple words: Plateaus are grouped into four types based on how much they have developed over time: new, mature, old, and rejuvenated.

🎯 Exam Tip: Understanding the cycle of erosion helps in classifying plateaus by their developmental stages, showing how landforms change over geological time.

Question 18. What does the term Rejuvenated Plateau mean?
Answer: A Rejuvenated Plateau refers to an old plateau that has been uplifted again by internal Earth movements, causing a new cycle of erosion to begin on its surface. This gives it a refreshed appearance.
In simple words: A Rejuvenated Plateau is an old flat land that gets lifted up again, causing new erosion to start.

🎯 Exam Tip: Rejuvenation implies a renewed phase of erosion, often due to tectonic uplift, which can lead to the formation of entrenched meanders and other distinctive features.

Question 19. What is a Plain? How many types of plains are there?
Answer: A plain is an area of land with low relief, meaning it is relatively flat, regular, and has a gentle slope. Plains are classified based on their formation process, primarily by erosion or deposition, into various types such as river-eroded plains, glaciated plains, wind-eroded plains, karst plains, river-deposited plains, glacio-fluvial plains, loess plains, lava-made plains, and lake-made plains.
In simple words: A plain is a flat, low-lying area. There are many types, formed by things like rivers, glaciers, wind, or lava.

🎯 Exam Tip: When defining plains, include characteristics like low relief and gentle slope. For classification, mention the main types based on whether they are formed by erosion or deposition.

Question 21. What does the term Piedmont Mountain mean?
Answer: When rivers flow down from high areas, they carry away eroded material. These materials are then deposited in the lower parts of mountains. The flat areas formed by this process are called Piedmont Plains.
In simple words: Piedmont Plains are flat lands formed at the base of mountains where rivers deposit soil they carried from higher up.

🎯 Exam Tip: Remember that Piedmont Plains are formed by deposition, specifically at the foot of mountains by rivers.

Question 22. What is a Loess Plain?
Answer: Loess Plains are flat areas made from fine soil that has been carried and dropped by wind, especially in desert regions. This accumulated fine soil creates these unique plains.
In simple words: Loess plains are flat lands made of fine dust carried by wind from deserts.

🎯 Exam Tip: Identify "wind" and "fine soil" as key terms when defining Loess Plains to score well.

Question 23. Name the Lake - Made Plains.
Answer: Examples of Lake-Made Plains include the Plain of Hungary and the Prairie region of America. These plains are formed when lakes are filled with sediments and then the lake bed is uplifted.
In simple words: Plains formed from old lake beds are called Lake-Made Plains, like the Hungarian Plain and the American Prairies.

🎯 Exam Tip: When asked for examples, name at least two distinct geographical locations to show broader knowledge.

Question 24. Why are plains called the Cradle of Civilizations?
Answer: Plains are called the "Cradle of Civilizations" because most of the world's major ancient civilizations, such as the Indus Valley Civilization, Mesopotamian Civilization, and Nile Valley Civilization, developed in these flat, fertile areas. Plains offered ideal conditions for farming, settlement, and growth.
In simple words: Plains are called "Cradle of Civilizations" because big early societies grew there, thanks to good farming land.

🎯 Exam Tip: Mention specific historical civilizations that thrived in plain regions to support your answer effectively.

Question 25. What is a Rift Valley?
Answer: A Rift Valley is a valley with steep sides. It is formed when a block of the earth's surface sinks downwards between two faults that are almost parallel to each other. This downward movement creates the deep valley.
In simple words: A Rift Valley is a deep, steep-sided valley formed when a section of land drops between two parallel cracks in the Earth's crust.

🎯 Exam Tip: Key terms for Rift Valley are "steep-sided," "downward displacement," and "parallel faults."

Question 27. What is Consequent Valley?
Answer: A Consequent Valley is formed by the first streams that begin flowing in a certain area, following the natural, initial slope of the land. These valleys are directly guided by the original terrain.
In simple words: A Consequent Valley is formed by streams that follow the original slope of the land.

🎯 Exam Tip: Focus on "initial streams" and "initial slope" when defining a consequent valley.

Question 28. What is Subsequent Valley?
Answer: A Subsequent Valley is formed by streams that develop after the main consequent stream. These new streams join the main consequent stream at right angles, creating a distinct valley pattern.
In simple words: A Subsequent Valley is formed by newer streams that join the main original stream at 90-degree angles.

🎯 Exam Tip: Distinguish subsequent valleys from consequent ones by their later development and right-angle joining pattern.

Question 29. Which problems have been solved by the concept of Plate Tectonics?
Answer: The theory of Plate Tectonics has helped us understand how various geological processes occur. It explains things like mountain formation (mountainization), earthquakes, volcanoes, and the movement of continents over time (continental drift).
In simple words: Plate Tectonics explains how mountains form, why earthquakes and volcanoes happen, and how continents move.

🎯 Exam Tip: Remember that Plate Tectonics provides a unified explanation for many major geological phenomena, so list several key examples.

RBSE Class 11 Physical Geography Chapter 8 Short Answer Type Questions (SA-I)

Question 1. Present the land form - building forces through the table.
Answer: The forces that shape landforms can be categorized as shown in the table below:

🎯 Exam Tip: When presenting classifications in a table, ensure clear headings and logical grouping of sub-categories. A well-structured table helps in easy understanding.

Question 3. How many types of mountain-building movements are there? Explain.
Answer: Mountains are not formed all at once; it's a long process that happened over different periods. There have been four main mountain-building movements throughout Earth's history:
1. **Archean Mountain Period:** This movement happened about 40 million years ago, during the Cambrian period.
2. **Caledonian Mountain Period:** This movement occurred about 32 million years ago.
3. **Hercynian Mountain Period:** This movement took place about 22 million years ago.
4. **Alpine Mountain Period:** This is the most recent movement, happening about 3 million years ago.
In simple words: Mountains are built over long times through four main periods: Archean, Caledonian, Hercynian, and Alpine, each happening millions of years apart.

🎯 Exam Tip: Remember the four major mountain-building periods and their approximate ages to accurately explain the long-term process of mountain formation.

Question 5. Explain the formation of valleys.
Answer: Valleys are generally long, low areas on Earth's surface, typically found between hills or mountains. They are formed mainly by the action of rivers, but also by internal Earth movements (diastrophism), underground water, and glaciers. Valleys go through different stages of development, changing from their initial form to their final shape.
In simple words: Valleys are long dips in the land, often between mountains, formed by rivers, Earth's movements, underground water, and glaciers, and they change over time.

🎯 Exam Tip: When explaining valley formation, list the key agents like rivers, tectonic forces, and glaciers, and mention the concept of developmental stages.

Question 6. Explain the valleys formed by tectonic events.
Answer: Valleys formed by movements inside the Earth (endogenetic forces) are called tectonic valleys. There are two main types:
1. **Synclinal Valley:** These form when rocks fold due to compression. The downward-curved part of the fold, called a syncline, creates a valley.
2. **Rift Valley:** These are steep-sided valleys created when a block of Earth's crust sinks down between two almost parallel cracks (faults). The Narmada River valley is a good example of a rift valley.
In simple words: Tectonic valleys are made by Earth's internal movements, like Synclinal valleys from folded rocks and Rift valleys from sunken blocks of land.

🎯 Exam Tip: Clearly differentiate between synclinal and rift valleys by describing their specific formation mechanisms and giving an example for rift valleys.

Question 7. Explain the classification of valleys on the basis of stages of development.
Answer: Valleys change their shape and size as they develop over time. Based on their stage of development, valleys are grouped into three categories:
1. **Youth Valley:** In this early stage, the valley is deep and has steep slopes because rivers erode downwards a lot.
2. **Mature Valley:** At this stage, the valley becomes wider, and its slopes become gentler. Rivers start eroding sideways more than downwards.
3. **Old Valley:** This is the final stage where the valley becomes very wide and almost flat, with very gentle slopes.
In simple words: Valleys are grouped by their age into Youth (deep, steep), Mature (wider, gentler slopes), and Old (wide, flat) stages.

🎯 Exam Tip: When classifying valleys by stage, focus on how depth, width, and slope change from youth to old age.

Question 8. Explain the classification of valleys according to the change in base-surface?
Answer: Valleys also change based on how the base level (like sea level) moves up or down. Considering these changes, valleys are classified into two types:
1. **Drowned Valley:** These are coastal valleys that get submerged when the sea or lake water level rises, or when the land itself sinks.
2. **Rejuvenated Valley:** These valleys are formed when the sea level drops, causing rivers to start eroding downwards again more strongly. This renewed erosion creates a new, lower base level.
In simple words: Valleys are grouped as Drowned (underwater due to rising sea/sinking land) or Rejuvenated (deepened by rivers when sea level drops).

🎯 Exam Tip: Understand that base-surface changes refer to changes in sea level or land elevation, which trigger specific valley formations like drowned or rejuvenated valleys.

RBSE Class 11 Physical Geography Chapter 8 Short Answer Type Questions (SA-II)

Question 1. Explain the classification of mountains based on height.
Answer: Mountains are classified into four categories based on their height:
1. **High Mountains:** These are mountains taller than 6000 feet (or over 2000 meters).
2. **Average High Mountains:** These mountains range in height from 4500 feet to 6000 feet (or 1500 meters to 2000 meters).
3. **Less High Mountains:** These mountains are between 3000 feet and 4500 feet (or 1000 meters to 1500 meters).
4. **Low Mountains:** These mountains have heights between 2000 feet and 3000 feet (or 700 meters to 1000 meters).
In simple words: Mountains are sorted into four groups based on how tall they are: High, Average High, Less High, and Low, with specific height ranges for each.

🎯 Exam Tip: Remember the specific height ranges (both feet and meters) for each mountain category to provide a precise classification.

Question 2. Explain the influence of mountains on human life.
Answer: Mountains have a significant impact on human life in many ways, affecting culture, tourism, resources, and even the character of people. Here's how:
1. They support **tourism**, with many tourist centers developing in mountainous areas.
2. They offer **recreation, health benefits**, and opportunities for **adventurous mountaineering**.
3. Mountains often form **natural boundaries** between regions or countries.
4. They play a crucial role in **controlling climate** by influencing weather patterns.
5. Mountains are important for **security and strategic defense**.
6. Rivers flowing from mountains are a major **source of water** for large populations.
7. They provide various **medicinal plants**.
8. People living in mountainous regions are often seen as **adventurous, hardworking, healthy**, and gentle, which also impacts their religious and spiritual beliefs.
In simple words: Mountains affect human life by providing tourism, water, climate control, natural borders, and unique plants, shaping people's lifestyles and beliefs.

🎯 Exam Tip: For this type of question, aim to list at least 5-6 distinct points covering environmental, economic, and cultural influences of mountains on human life.

Question 3. Explain the classification of plateaus on the basis of climate.
Answer: Climate greatly influences the formation and structure of plateaus. Based on climatic conditions, plateaus are classified into three types:
1. **Humid Plateau:** These plateaus receive good rainfall and have about 50% humidity. Rivers here flow fast, eroding the plateau. Examples include Cherrapunji, Malagasy, Eastern Australia, and Otago plateaus.
2. **Arid Plateau:** Formed in dry regions where evaporation is high and rainfall is low. These are often found on the western edges of continents near the Cancer and Capricorn lines. Examples are Tarim, Potwar, Gobi, and Sedaam plateaus.
3. **Snowy Plateau:** Located in high latitudes or cold regions, these plateaus are covered in snow most of the year. Examples include Greenland, Antarctica, and the southern part of the Patagonia plateau.
In simple words: Plateaus are sorted by climate into Humid (wet, rivers erode), Arid (dry, less rain), and Snowy (cold, covered in snow) types.

🎯 Exam Tip: When classifying by climate, ensure you describe the key climatic characteristic, its effect on the plateau, and provide relevant geographical examples for each type.

Question 4. Explain the valleys formed by external forces.
Answer: Valleys shaped by external forces (like wind, water, and ice) are classified as follows:
1. **River Valley:** These are formed by river water eroding the land. In the early stages, rivers carve V-shaped valleys, which then widen and deepen depending on the land's structure and water flow.
2. **Glacial Valley:** These are U-shaped valleys formed by glaciers moving across and scouring the land. They have steep, straight sides and a flat or rounded bottom.
3. **Blind Valley:** This occurs in limestone areas where a river flows into a sinkhole and disappears underground, leaving the downstream valley dry.
In simple words: Valleys formed by outside forces are River Valleys (V-shaped by water), Glacial Valleys (U-shaped by ice), and Blind Valleys (where a river disappears underground).

🎯 Exam Tip: For external forces, clearly link the agent (river, glacier, underground water) to the distinctive shape or characteristic of the valley formed.

Question 5. Classify the valleys on genetic basis.
Answer: Valleys are classified based on their origin (genetic basis) into the following types:
1. **Consequent Valley:** Formed by the first streams that follow the initial slope of the land. These are common in newly formed areas, volcanic regions, and coastal plains.
2. **Subsequent Valley:** Developed by streams that originate after the consequent stream and join it at right angles. These valleys are usually found in areas with softer rocks.
3. **Obsequent Valley:** Formed by streams flowing in a direction opposite to the main consequent stream, against the dip of the rock layers.
In simple words: Valleys are grouped by how they started: Consequent (follows initial slope), Subsequent (joins main stream at right angles), and Obsequent (flows opposite to main stream).

🎯 Exam Tip: Focus on the relationship of the stream to the land's slope and the main river when classifying valleys genetically.

Question 1. Define the mountains. Also explain different mountain - building movements.
Or
Explain different mountain-building movements responsible for the formation of mountains.
Answer: A mountain is a highly elevated part of the Earth's surface with a narrow peak and steep slopes. Finch defined a mountain as a landform 600 meters or more above sea level, with a slope between 260 to 350 degrees.
**Mountain - Building Movements:**
Mountains are not formed suddenly but through long processes over different periods. So far, four major mountain-building movements have taken place, separated by long, quiet times when pressure built up. These movements are classified as:
1. **Archean Period:** This mountain-building event happened about 40 million years ago during the Cambrian Period. Mountains like Fenno-Scandinavia, Aravalli, Dharwad, Chota Nagpur, and Eastern Ghats in India were formed then.
2. **Caledonian Period:** This movement occurred about 32 million years ago. Mountains like the Appalachian in America and Scottish Upland in Europe were formed during this time, and they are rich in minerals.
3. **Hercynian Period:** This movement took place about 22 million years ago. Mountains like Tian Shan, Altai Shan, Khingan, Nanshan, Eastern Cordillera, Penine, Harz, Vosges, and Black Forest were formed.
4. **Alpine Period:** This is the most recent period, about 3 million years ago, during the Oligocene, Miocene, and Paleocene epochs. New folded mountains like the Himalayas, Kunlun, Karakoram, Arakan, Elburz, Hindu Kush, Rockies, Andes, Alps, Balkan, and Pyrenees were formed then.
In simple words: Mountains are tall landforms with steep slopes. They formed over millions of years through four main building periods: Archean, Caledonian, Hercynian, and Alpine, each creating different mountain ranges around the world.

🎯 Exam Tip: When defining mountains, include both a general description and Finch's specific criteria. For mountain-building movements, list the four periods with their approximate ages and at least two examples for each, if possible.

Question 2. Define the plateaus. Also explain the classification of plateaus on the basis of stages of development.
Answer: A plateau is an elevated part of the Earth's surface with a flat and broad top, and steep edges.
**Classification of Plateaus on the Basis of Stages of Development:**
Plateaus develop over a long time. Based on their stage of development from their origin to the present, plateaus are classified into four types:
1. **New Plateau:** This is the initial stage of a plateau, often characterized by ongoing uplift or recent formation.
2. **Mature Plateau:** In this stage, the plateau has rough and uneven land, with caves and ridges. Its edges often look like terraces, and it may have perpendicular walls and rocky terraces.
3. **Old Plateau:** The relief of an old plateau gradually changes into a plain, like the Ranchi Plateau. Rivers flow through shallow valleys, and small hills or domes (monadnocks) can be seen on the surface.
4. **Rejuvenated Plateau:** These are old plateaus that have been re-elevated due to internal Earth movements. This re-starts the process of erosion on them. A key example is the Plateau of Missouri in the USA.

🎯 Exam Tip: When classifying by development, describe the characteristic features of each stage (New, Mature, Old, Rejuvenated) and provide examples where possible.

Question 3. Explain the concept of Land form Development.
Answer: Landforms are constantly changing. Continents and oceans are the largest landforms (First Order). Mountains, plateaus, and plains are next (Second Order), and all the smaller features created by external forces are Third Order. None of these landforms are permanent.
Internal Earth forces create landforms, while external forces (like wind, water, and ice) destroy them. For example, the Himalayan Mountains stand where the Tethys Sea once was. Mountains erode into plateaus and then plains, and plains can even sink to become oceans. This continuous cycle of landform development is complex. The Earth's surface is made of about 20 large and small tectonic plates. Their movement causes tectonic actions at their edges, constantly reshaping the planet.
In simple words: Landforms are always changing due to forces inside (making them) and outside (destroying them) the Earth. This constant cycle, driven by moving tectonic plates, means no landform stays the same forever.

🎯 Exam Tip: Emphasize the dynamic nature of landforms, the interplay between endogenetic and exogenetic forces, and the role of plate tectonics in this continuous cycle.