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Landforms and Life

NCERT Class 6 · Social Science Based on NCERT Class 6 Social Science textbook · Free CBSE study kit

Chapter Notes

**LANDFORMS AND LIFE — KEY POINTS**

**Three Main Landforms:**

1. Mountains: High landforms with broad base, steep slopes, narrow summit

2. Plateaus: Raised, relatively flat areas of land

3. Plains: Low, flat stretches of land

**Key Terms:**

• **Altitude** = Height above sea level

• **Montane Forest** = Mountain forest with conifers (pine, fir, spruce, deodar)

• **Precipitation** = Rain, snow, hail from atmosphere

• **Conifer Trees** = Tall, cone-shaped, thin-pointed leaves

• **Erosion** = Wearing away of land by water, wind, ice

**Important Facts:**

• Mount Everest (Tibet-Nepal) = World's highest mountain

• Kanchenjunga (Nepal-Sikkim, India) = 2nd highest in Himalayas

• Anamudi (Kerala) = Highest in South India

• Ganga River = Nearly 2,500 km long, originates in Himalayas

• Young mountains (Himalayas) = Sharp peaks, still growing, still forming

• Old mountains (Aravalli) = Rounded peaks, shaped by erosion

• Snow melts in summer → Feeds rivers; at high altitude → Never melts

**Mountain Animals:** Golden eagle, peregrine falcon, snow leopard, ibex, yak, Himalayan tahr, mountain hare, black bear, grey fox

**Diagrams to Remember:** Mountain shape (broad base → steep slopes → narrow summit); Three landforms side by side (mountains tallest, plateaus middle, plains flattest)

**Don't Confuse:** Mountain (much higher, steeper) ≠ Hill (lower, rounded); Snow (frozen precipitation) ≠ Hail (ice pellets); Young mountains (sharp, still forming) ≠ Old mountains (rounded, eroded)

MCQs — 10 Questions with Answers

Q1. Which of these is NOT one of the three main types of landforms?

  • A. Mountains
  • B. Plateaus
  • C. Deserts ✓
  • D. Plains

Answer: C — The three main landforms are mountains, plateaus, and plains; deserts are a type of region but not a main landform category.

Q2. What does the term 'altitude' mean?

  • A. The distance from East to West
  • B. The height of an object above sea level ✓
  • C. The width of a mountain
  • D. The temperature at a place

Answer: B — Altitude specifically refers to the height or elevation of something measured from sea level.

Q3. Which of the following is the highest mountain in South India?

  • A. Mount Kilimanjaro
  • B. Anamudi ✓
  • C. Mount Everest
  • D. Mont Blanc

Answer: B — Anamudi (also called Anai Peak) in Kerala is the highest mountain in South India.

Q4. Himalayan mountains are called 'young' mountains because ________.

  • A. They were formed recently in Earth's history and still have sharp peaks ✓
  • B. They have many young trees growing on them
  • C. They are smaller than other mountains
  • D. They have rounded tops

Answer: A — Young mountains like the Himalayas were formed more recently (still millions of years ago) in Earth's history, have sharp peaks, and are still growing today.

Q5. What type of trees grow in montane forests?

  • A. Mango and neem trees
  • B. Conifer trees like pines, firs, and spruce ✓
  • C. Coconut and palm trees
  • D. Only grass and mosses

Answer: B — Montane forests on mountain slopes are characterized by conifer trees such as pines, firs, spruce, and deodar with their distinctive tall, cone shape and thin pointed leaves.

Q6. Look at this diagram showing three landforms. Which one is the plateau?

  • A. The tallest one with sharp peaks on the left
  • B. The flat raised area in the middle ✓
  • C. The lowest flat area on the right
  • D. The sloped area at the bottom

Answer: B — A plateau is a raised, relatively flat area of land higher than the surrounding plains but flatter on top than a mountain.

Q7. Why is snow important in the Himalayan mountains? Because it ________.

  • A. Makes the landscape look beautiful
  • B. Melts in summer and feeds rivers like the Ganga ✓
  • C. Prevents trees from growing
  • D. Keeps the mountains cold all year

Answer: B — Mountain snow at lower altitudes melts during summer and provides water that feeds major rivers like the Ganga, which millions of people depend on.

Q8. Which river originates in the Himalayas and is nearly 2,500 km long?

  • A. Ganga ✓
  • B. Brahmaputra
  • C. Godavari
  • D. Narmada

Answer: A — The Ganga river originates in the Himalayas and is nearly 2,500 km long with many tributaries joining it.

Q9. How are old mountains like the Aravalli Range different from young mountains like the Himalayas?

  • A. Old mountains are taller and sharper
  • B. Old mountains have rounded peaks because they have been shaped by erosion over time ✓
  • C. Old mountains have more snow
  • D. Old mountains have no animals living in them

Answer: B — Older mountains like the Aravalli have been rounded by erosion over millions of years, while young mountains like the Himalayas still have sharp peaks.

Q10. What is the main difference between a mountain and a hill?

  • A. Mountains have trees and hills do not
  • B. Mountains are much higher, have steeper slopes and narrower summits, while hills are lower with less steep slopes and rounded tops ✓
  • C. Hills are found only in the north and mountains in the south
  • D. There is no difference between mountains and hills

Answer: B — Mountains are significantly higher landforms with steep slopes and narrow summits, while hills are lower with gentler slopes and more rounded tops.

Flashcards

What is a landform?

A landform is a physical feature on the Earth's surface like mountains, plateaus, or plains that takes millions of years to form.

Name the three main types of landforms.

The three main landforms are mountains, plateaus, and plains.

What does altitude mean?

Altitude is the height of an object or place above sea level.

What is a montane forest?

A montane forest is a type of forest that grows in mountainous regions with cone-shaped trees like pines, firs, and spruce.

Why are Himalayan mountains called 'young' mountains?

Himalayan mountains are called young because they were formed recently in Earth's history (still millions of years ago) and still have sharp peaks and are still growing.

Which Indian mountain is the highest in South India?

Anamudi (also called Anai Peak) in Kerala is the highest mountain in South India.

What are conifer trees and where do they grow?

Conifer trees are tall, cone-shaped trees with thin pointed leaves (like pines, firs, and deodars) that grow on mountain slopes in montane forests.

How long is the Ganga river?

The Ganga river is nearly 2,500 kilometres long and originates from the Himalayas.

What is the difference between a mountain and a hill?

Mountains are much higher than hills, have steeper slopes and narrower summits, while hills are lower with less steep slopes and more rounded tops.

What is precipitation?

Precipitation is water from the atmosphere reaching the ground in any form, including rain, snow, and hail.

Important Board Questions

What is a landform? Give one example. [1 mark]

A landform is a physical feature on Earth's surface; example: mountains, plateaus, or plains. Just name one.

Fill in the blanks: The three main types of landforms are ________, ________, and ________. [1 mark]

The three categories mentioned in the chapter are mountains, plateaus, and plains.

Explain in 2-3 sentences why snow in the Himalayan mountains is important for people living in India. [2 marks]

Snow at high altitude melts in summer and feeds rivers; mention the Ganga river and that people depend on this water.

What is a montane forest? Name any two types of trees found in montane forests and describe their appearance. [2 marks]

Montane forest = mountain forest with specific trees; describe conifer trees as tall, cone-shaped with thin pointed leaves (examples: pine, fir, spruce, deodar).

Describe the main features of mountains. Why are Himalayan mountains called 'young' mountains? Explain with one example of an old mountain. [3 marks]

Mountains have: broad base, steep slopes, narrow summit. Young mountains = recently formed, sharp peaks, still growing (Himalayas still grow). Old mountains = rounded by erosion (Aravalli Range example).

Imagine you are travelling from Chhota Nagpur in Jharkhand to Almora in Uttarakhand. Describe the different landscapes you would see on this journey and explain how each landscape (mountain, plateau, plain) affects the life of people living there. [5 marks]

You will pass three landforms: identify each one; for each, describe climate, vegetation, animals, and how people adapt (homes, jobs, food, transport). Use examples like montane forests with conifers in mountains, different animals in each region, how rivers from mountains help plains.

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