Shaping of the Earth's Surface — Class 9 MCQs with Answers
Class 9 CBSE Social Science · Chapter 2
79 practice questions · 24 Easy · 29 Medium · 26 Hard · Updated
Jump to the 6 solved questions
Practise the most important Class 9 CBSE Social Science questions from Chapter 2, "Shaping of the Earth's Surface". You get 10 timed quizzes made from 79 NCERT-based MCQs, with answers and explanations. The questions are split into 24 Easy, 29 Medium and 26 Hard. Warm up on the basics, then move on to the exam-level questions that top scorers in CBSE Board exams get right.
To score well in "Shaping of the Earth's Surface", focus on dates, cause and effect, and reading maps and sources. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This helps you stay accurate when time is short, just as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Shaping of the Earth's Surface, then move to Medium and Hard to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 9 Social Science mastery score. Try the 6 sample questions below: tap an option to see the answer and a worked explanation. Sign in free to start practising.
Shaping of the Earth's Surface — important questions & MCQs with answers (Class 9 Social Science)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. Tap an option to check yourself.
0 of 6 answered
- Q1 of 6Easy
Which is the outermost layer of the Earth?
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Answer: Crust
Explanation: The crust is the thin, solid outermost layer of the Earth on which we live.
- Q2 of 6Easy
Molten rock material found beneath the Earth's surface is called:
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Answer: Magma
Explanation: Magma is molten rock below the surface; when it erupts onto the surface it is called lava.
- Q3 of 6Medium
In deserts, rocks often crack and break due to large differences between day and night temperatures. This is an example of:
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Answer: Physical weathering
Explanation: Repeated heating and cooling makes rocks expand and contract until they crack, a form of physical (mechanical) weathering.
- Q4 of 6Medium
Assertion (A): Deltas are often prone to flooding. Reason (R): Deltas are important for fishing because the mix of fresh water and salt water creates diverse aquatic life.
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Answer: Both A and R are true but R is not the correct explanation of A
Explanation: Both are true. R explains why deltas are good for fishing, not why they flood, so R is not the explanation of A.
- Q5 of 6Hard
Scientists cannot dig down to study the Earth's core directly. Which line of evidence helps them understand the interior's structure and composition?
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Answer: The behaviour of seismic waves passing through different layers
Explanation: Seismic waves change speed and direction as they pass through layers of different density and state, revealing the interior's structure.
- Q6 of 6Hard
Assertion (A): Most of the world's volcanoes and earthquakes lie along plate boundaries. Reason (R): Plate boundaries are zones where the crust is under great stress from moving plates.
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Answer: Both A and R are true and R is the correct explanation of A
Explanation: Stress builds along plate boundaries as plates move, releasing energy as earthquakes and allowing magma to rise as volcanoes, so R explains A.
Shaping of the Earth's Surface notes: key concepts (Class 9 Social Science)
The earth's surface is shaped from below by movements of its interior and from above by weathering and erosion. This chapter describes the earth's layered interior, the theory of plate tectonics, and the landforms produced by rivers, glaciers, wind and waves.
| Layer | Where and what it is like | Made of | Density |
|---|---|---|---|
| Crust | Thin, solid outermost layer; thicker under continents than under oceans | Continents: SIAL (aluminium-rich); oceans: SIMA (silica, magnesium) | Light |
| Mantle | Thick middle layer between the crust and the core | Hot, partly molten material; the source of volcanic magma | Denser |
| Core | Innermost layer; liquid outer part, solid inner part | Iron and nickel (NIFE) under great pressure | Very dense |
| Boundary | How the plates move | What happens | Example |
|---|---|---|---|
| Convergent | Towards each other | Mountains fold up, or an oceanic plate is pushed beneath a continental one | Himalaya |
| Divergent | Away from each other | Magma rises and forms new crust between them | Mid-Atlantic Ridge |
| Transform | Slide sideways past each other | No crust is made or destroyed; frequent earthquakes | San Andreas Fault, USA |
- 1Weathering breaks rock into loose fragments where it lies, with no movement
- 2Erosion: rivers, glaciers, wind or waves remove the material and carry it away
- 3Deposition: the material is laid down at a new place
- 4New landforms are built, such as deltas and plains
- 5Example: rivers carried sediment from the Himalayas to build the Northern Plains
| Agent | Landforms |
|---|---|
| River, upper course (steep, fast) | Cuts V-shaped valleys, gorges and waterfalls |
| River, lower course (gentle, slow) | Builds meanders, floodplains and deltas |
| Glacier | Carves U-shaped valleys; deposits moraines |
| Wind, in dry deserts | Erodes mushroom rocks; builds sand dunes |
| Sea waves | Erode sea cliffs, sea caves and sea arches |
- Interior of the earth
- The earth is layered into crust, mantle and core, each differing in composition, temperature and physical state.
- Crust
- The thin outermost solid layer on which we live, thicker under continents than under oceans and broken into moving plates.
- Mantle
- The thick layer beneath the crust, where slow convection currents in semi-molten rock drive the movement of the plates above.
- Core
- The innermost layer, extremely hot and heavy: a fluid outer core mainly of iron and nickel around a solid, spinning inner core, the densest part of the earth.
- Lithospheric plates
- Large rigid slabs of crust and upper mantle that move slowly over the softer material beneath, carrying continents with them.
- Plate tectonics
- The theory that the earth's surface is made of moving plates whose interactions account for earthquakes, volcanoes and mountains.
- Plate boundaries
- Plates converge, diverge or slide past one another, and each type of boundary produces a characteristic set of landforms.
- Endogenic and exogenic forces
- Endogenic forces act from within the earth and build landforms up; exogenic forces act on the surface and wear them down.
- Earthquakes
- Sudden releases of energy along faults, radiating as seismic waves from a focus underground to an epicentre at the surface.
- Volcanoes
- Openings through which molten rock reaches the surface, building cones and plateaus and enriching soils over time.
- Weathering
- The breakdown of rock in place by physical, chemical or biological action, without any movement of the broken material.
- Erosion and deposition
- Erosion is the removal and transport of weathered material by rivers, glaciers, wind or waves; deposition is its laying down elsewhere.
- River landforms
- Rivers cut V-shaped valleys, gorges and waterfalls in their upper course and build meanders, floodplains and deltas lower down.
- Glacial and desert landforms
- Glaciers carve U-shaped valleys and deposit moraines, while wind erosion in deserts produces mushroom rocks and builds sand dunes.
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Shaping of the Earth's Surface — FAQs
What are the key concepts in Class 9 Social Science Shaping of the Earth's Surface?+
The earth's surface is shaped from below by movements of its interior and from above by weathering and erosion. This chapter describes the earth's layered interior, the theory of plate tectonics, and the landforms produced by rivers, glaciers, wind and waves. Key ideas include Interior of the earth, Crust, Mantle, Core, Lithospheric plates, Plate tectonics.
What does Class 9 Social Science Chapter 2 (Shaping of the Earth's Surface) cover on XamBaaz?+
It has 79 NCERT-based MCQs on "Shaping of the Earth's Surface": 24 Easy, 29 Medium and 26 Hard. Together they make 10 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare for CBSE Board exams.
Are these "Shaping of the Earth's Surface" questions free to practise?+
Yes. Sign in with Google to practise "Shaping of the Earth's Surface" free. Full unlimited access is ₹999/year. One year from the day you pay. You stay in Class 9 till 31 March; on 1 April your account moves up to Class 10 and the rest of your year carries over. No chapter is charged separately.
How should I revise "Shaping of the Earth's Surface" for the exam?+
Start with the Easy quiz to check your basics, then try Medium and Hard to practise applying them. There are 10 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Shaping of the Earth's Surface" MCQs available with answers?+
Yes. 6 sample questions are on this page with answers: tap an option, or "Show answer", to see the correct option and a step-by-step explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Shaping of the Earth's Surface" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Shaping of the Earth's Surface (Class 9 Social Science)?+
The questions that matter most test Interior of the earth, Crust, Mantle, Core, Lithospheric plates, Plate tectonics. This page shows 6 solved important MCQs with answers and explanations. Sign in to practise all 79 questions on the chapter as timed quizzes.
Is there an online quiz for Shaping of the Earth's Surface?+
Yes — Class 9 Social Science Shaping of the Earth's Surface has timed online quizzes at Easy, Medium and Hard levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.
Are there question answers and extra questions for Shaping of the Earth's Surface (Class 9 Social Science)?+
Yes. This page has 6 solved questions on Shaping of the Earth's Surface, each with the correct answer and a short explanation. Sign in to practise all 79 questions on the chapter as timed quizzes.
Are there assertion–reason and case study questions for Shaping of the Earth's Surface (Class 9 Social Science)?+
Yes. The Shaping of the Earth's Surface question bank has 5 assertion–reason questions and 1 case-based (case study) question in the CBSE board format, alongside the regular MCQs. Each comes with the answer and a worked explanation. Sign in to practise them in timed quizzes.