CBSE Class 6 General Knowledge

Unit 3: World Geography

Lesson: Natural Wonders of the World

📘 Study Module: Natural Wonders of the World

1. Introduction

Natural wonders are amazing features of the Earth created by natural processes over millions of years. They show the beauty and power of nature and attract people from all over the world.

2. Meaning of Natural Wonders

Natural wonders are landforms or natural features not made by humans. They are formed due to volcanic activity, erosion, weathering, movement of water, ice, or wind.

3. Famous Natural Wonders of the World

Some well-known natural wonders include:

• Grand Canyon (USA)
• Mount Everest (Asia)
• Great Barrier Reef (Australia)
• Victoria Falls (Africa)
• Amazon Rainforest (South America)
• Northern Lights (Polar Regions)
• Dead Sea (Asia)

4. Formation of Natural Wonders

Natural wonders are formed by natural forces such as flowing rivers, earthquakes, volcanoes, glaciers, and climatic changes. These processes take place over a very long period of time.

5. Importance of Natural Wonders

Natural wonders help us understand the Earth’s natural processes. They support biodiversity and attract tourism. They also remind us of the need to protect nature.

📝 Questions and Answers

A. Short Answer Questions

(One sentence each)

1. What are natural wonders?
   Answer: Natural wonders are special natural features formed by nature.
2. Name one natural wonder of the world.
   Answer: The Grand Canyon is a natural wonder.
3. Which is the highest mountain in the world?
   Answer: Mount Everest is the highest mountain in the world.
4. Where is the Great Barrier Reef located?
   Answer: The Great Barrier Reef is located in Australia.
5. What creates waterfalls?
   Answer: Waterfalls are created by the continuous flow of rivers over rocks.
6. Which natural wonder is known for coral reefs?
   Answer: The Great Barrier Reef is known for coral reefs.
7. What causes volcanic landforms?
   Answer: Volcanic landforms are caused by volcanic eruptions.
8. Which river formed the Grand Canyon?
   Answer: The Colorado River formed the Grand Canyon.
9. What are the Northern Lights?
   Answer: The Northern Lights are natural light displays in the polar skies.
10. Why are natural wonders important?
    Answer: Natural wonders are important because they show the beauty and power of nature.

B. Long Answer Questions

(3–5 sentences each)

11. Explain how natural wonders are formed.
    Answer: Natural wonders are formed by natural processes such as erosion, volcanic eruptions, and earthquakes. Rivers carve valleys and canyons over time. Wind and ice shape landscapes. These processes take millions of years.
12. Describe the Grand Canyon.
    Answer: The Grand Canyon is a deep valley in the USA. It was formed by the Colorado River. The canyon shows layers of rocks. It is one of the most famous natural wonders.
13. Write a short note on Mount Everest.
    Answer: Mount Everest is the highest mountain in the world. It is located in the Himalayas. It attracts climbers from many countries. The mountain has extreme weather conditions.
14. Explain the importance of the Great Barrier Reef.
    Answer: The Great Barrier Reef is the largest coral reef system. It supports a wide variety of marine life. It protects coastlines from waves. It is an important natural heritage site.
15. What are waterfalls and how are they formed?
    Answer: Waterfalls are places where rivers fall from a height. They are formed due to uneven land surfaces. Continuous water flow erodes rocks. Over time, large waterfalls are created.
16. Describe the Amazon Rainforest as a natural wonder.
    Answer: The Amazon Rainforest is the largest tropical rainforest. It is located in South America. It has rich biodiversity. It plays an important role in controlling climate.
17. Write a note on the Northern Lights.
    Answer: The Northern Lights are colorful lights seen in the sky near the poles. They occur due to interaction of solar particles with Earth’s atmosphere. They are also called Aurora Borealis. They are a beautiful natural phenomenon.
18. How do natural wonders support tourism?
    Answer: Natural wonders attract tourists from all over the world. Tourism helps local economies. It creates jobs and promotes cultural exchange. However, responsible tourism is important.
19. Why should natural wonders be protected?
    Answer: Natural wonders are valuable natural heritage. Pollution and human activities can damage them. Protecting them helps preserve biodiversity. Conservation ensures they remain for future generations.
20. How do natural wonders help us understand the Earth?
    Answer: Natural wonders show how natural forces shape the Earth. They help scientists study geology and climate. They also increase awareness about environmental protection.

🧠 Multiple Choice Questions (MCQs)

(With Answers and Detailed Explanations)

1. Which of the following is a natural wonder?
   a) Bridge
   b) Dam
   c) Grand Canyon
   d) Building
   Answer: c) Grand Canyon
   Explanation: The Grand Canyon is formed naturally by a river.
2. Mount Everest is located in ______.
   a) Alps
   b) Andes
   c) Himalayas
   d) Rockies
   Answer: c) Himalayas
   Explanation: Mount Everest lies in the Himalayan mountain range.
3. The Great Barrier Reef is found in ______.
   a) Africa
   b) Asia
   c) Australia
   d) Europe
   Answer: c) Australia
   Explanation: It is located off the coast of Australia.
4. Which river formed the Grand Canyon?
   a) Nile
   b) Amazon
   c) Colorado
   d) Ganga
   Answer: c) Colorado
   Explanation: The Colorado River carved the Grand Canyon.
5. Natural wonders are created by ______.
   a) humans
   b) machines
   c) nature
   d) buildings
   Answer: c) nature
   Explanation: Natural wonders are formed naturally.
6. Which is the largest coral reef system?
   a) Red Sea Reef
   b) Great Barrier Reef
   c) Maldives Reef
   d) Caribbean Reef
   Answer: b) Great Barrier Reef
   Explanation: It is the world’s largest coral reef.
7. Which natural wonder is a rainforest?
   a) Sahara
   b) Amazon
   c) Gobi
   d) Thar
   Answer: b) Amazon
   Explanation: The Amazon is a dense rainforest.
8. What causes the Northern Lights?
   a) Rainfall
   b) Wind
   c) Solar particles
   d) Clouds
   Answer: c) Solar particles
   Explanation: Solar particles interact with Earth’s atmosphere.
9. Which natural wonder is a waterfall?
   a) Mount Everest
   b) Amazon River
   c) Victoria Falls
   d) Dead Sea
   Answer: c) Victoria Falls
   Explanation: Victoria Falls is a famous waterfall.
10. Natural wonders are important because they ______.
    a) increase pollution
    b) support nature
    c) destroy land
    d) block rivers
    Answer: b) support nature
    Explanation: They help maintain ecological balance.
11. Which natural wonder is the lowest land point on Earth?
    a) Dead Sea
    b) Caspian Sea
    c) Black Sea
    d) Red Sea
    Answer: a) Dead Sea
    Explanation: The Dead Sea is the lowest land point.
12. Which force helps form canyons?
    a) Wind only
    b) Water erosion
    c) Earth’s rotation
    d) Gravity only
    Answer: b) Water erosion
    Explanation: Rivers erode rocks to form canyons.
13. Which continent has Victoria Falls?
    a) Asia
    b) Europe
    c) Africa
    d) Australia
    Answer: c) Africa
    Explanation: Victoria Falls is located in Africa.
14. Which natural wonder is made of ice?
    a) Glacier
    b) Desert
    c) Plateau
    d) Plain
    Answer: a) Glacier
    Explanation: Glaciers are large masses of ice.
15. What type of landform is Mount Everest?
    a) Plateau
    b) Hill
    c) Mountain
    d) Plain
    Answer: c) Mountain
    Explanation: Mount Everest is a mountain peak.
16. Natural wonders are examples of ______.
    a) human skill
    b) natural beauty
    c) technology
    d) architecture
    Answer: b) natural beauty
    Explanation: They show the beauty of nature.
17. Which natural wonder is found in polar regions?
    a) Amazon Rainforest
    b) Northern Lights
    c) Sahara Desert
    d) Dead Sea
    Answer: b) Northern Lights
    Explanation: The Northern Lights appear near the poles.
18. Why do tourists visit natural wonders?
    a) For shopping
    b) For education only
    c) To see natural beauty
    d) For farming
    Answer: c) To see natural beauty
    Explanation: Natural wonders attract visitors due to their beauty.
19. Which natural wonder supports marine life?
    a) Mount Everest
    b) Great Barrier Reef
    c) Sahara Desert
    d) Grand Canyon
    Answer: b) Great Barrier Reef
    Explanation: Coral reefs support marine ecosystems.
20. Why should natural wonders be conserved?
    a) To build cities
    b) To increase tourism only
    c) To protect nature
    d) To stop rivers
    Answer: c) To protect nature
    Explanation: Conservation helps preserve natural heritage.

✅ End of Lesson

Prepared strictly in accordance with the NCERT syllabus and CBSE Class 6 examination standards.