Class 9 Social Science Part 1 Chapter 2 MCQs – Shaping of the Earth’s Surface – examine the forces that build mountains and reshape the land around us. In Shaping of the Earth’s Surface, slow plate movements work alongside weathering, erosion and deposition to create changing landscapes. These questions connect processes with features such as valleys, deltas, dunes and limestone formations. You will also consider soil conservation and hazards including landslides and glacial lake outburst floods. The explanations help separate processes that are easy to confuse, especially rock breakdown and sediment movement. Follow the sequence from cause to landform as you work through the practice questions.
Class 9 Social Science Part 1 Chapter 2 MCQs Set 1
Q1. Which layers together form the lithosphere?
[A]. The crust and the uppermost mantle
[B]. The mantle and the entire core
[C]. The outer core and inner core
[D]. The crust and the atmosphere
Q2. What are tectonic plates?
[A]. Large slabs of solid rock forming the lithosphere
[B]. Stationary clouds in the upper atmosphere
[C]. Layers found only inside the Earth’s core
[D]. Ocean currents flowing across the seabed
Q3. What helps drive the movement of tectonic plates in the chapter’s explanation?
[A]. Seasonal changes in ocean salinity
[B]. Wind moving across the continents
[C]. Daily changes in river levels
[D]. Convection within the mantle
Q4. Which plate movement is associated with the formation of the Himalaya?
[A]. Movement of coastal waves towards land
[B]. Collision between continental plates
[C]. Separation of two continental plates
[D]. Sliding past without convergence
Q5. What generally happens when an oceanic plate meets a continental plate at a convergent boundary?
[A]. The oceanic plate sinks beneath the continental plate
[B]. Both plates stop moving permanently
[C]. New crust forms only between plates moving apart
[D]. The continental plate changes into a glacier
Class 9 Social Science Part 1 Chapter 2 MCQs Set 2
Q6. Which feature is associated with a divergent plate boundary?
[A]. A fold mountain formed by continental collision
[B]. A mid-ocean ridge where new crust forms
[C]. A river delta built from transported sediment
[D]. A fault where plates only slide past
Q7. Two plates slide past one another without creating or destroying crust. What boundary is this?
[A]. River-basin boundary
[B]. Divergent boundary
[C]. Transform boundary
[D]. Convergent boundary
Q8. Why do maps of earthquakes and volcanoes often resemble maps of plate boundaries?
[A]. Every earthquake begins in the centre of a continent
[B]. Many earthquakes and volcanoes occur where plates interact
[C]. Plate boundaries are determined by annual rainfall
[D]. Volcanoes occur only where rivers meet the sea
Q9. Which statement distinguishes weathering from erosion?
[A]. Weathering breaks rock down in place; erosion transports material
[B]. Both processes involve only underground heat
[C]. Weathering transports rocks; erosion always leaves them in place
[D]. Both processes occur only in coastal areas
Q10. Repeated heating and cooling causes a rock to break into smaller pieces. Which process is illustrated?
[A]. Deposition
[B]. Physical weathering
[C]. Chemical weathering
[D]. Volcanic activity
Class 9 Social Science Part 1 Chapter 2 MCQs Set 3
Q11. Water reacts with minerals and changes a rock’s composition. Which process is involved?
[A]. Wind transportation
[B]. Chemical weathering
[C]. Glacial deposition
[D]. Plate convergence
Q12. Roots widen cracks in a rock until it splits. This is an example of what?
[A]. Biological weathering
[B]. Coastal deposition
[C]. River transportation
[D]. Oceanic subduction
Q13. How does the removal of topsoil mainly affect farming?
[A]. It prevents all future rainfall over the field
[B]. It always increases the nutrient content of fields
[C]. It converts every field into a delta
[D]. It reduces the fertile soil available for crop growth
Q14. Why are contour bunds useful on cultivated slopes?
[A]. They change the direction of tectonic plate movement
[B]. They prevent all weathering of nearby rocks
[C]. They speed up runoff to remove fertile soil
[D]. They slow runoff and encourage water to enter the soil
Q15. Which group consists entirely of agents of gradation?
[A]. Continental, oceanic and mixed plates
[B]. Latitude, longitude, altitude and time
[C]. Crust, mantle, outer core and inner core
[D]. Running water, glaciers, wind, waves and groundwater
Class 9 Social Science Part 1 Chapter 2 MCQs Set 4
Q16. Which landform commonly develops through strong river erosion on a steep upper course?
[A]. A sand dune
[B]. A limestone stalactite
[C]. A V-shaped valley
[D]. A sea stack
Q17. Why can a waterfall develop where hard rock overlies softer rock?
[A]. Both rock layers dissolve at exactly the same rate
[B]. Wind deposits a ridge across the river overnight
[C]. The softer rock is eroded more quickly
[D]. The river stops transporting water
Q18. Which process helps a river meander become more pronounced?
[A]. Erosion on the outer bank and deposition on the inner bank
[B]. The complete absence of sediment movement
[C]. Equal uplift of both banks by a glacier
[D]. Deposition on the outer bank and erosion only upstream
Q19. Where does a river delta mainly develop?
[A]. At a glacier’s highest accumulation zone
[B]. At a transform plate boundary
[C]. At the ceiling of a limestone cave
[D]. At the river mouth through sediment deposition
Q20. Which coastal feature forms mainly through sediment deposition by waves?
[A]. A wave-cut platform
[B]. A sea cliff
[C]. A beach
[D]. A sea cave
Class 9 Social Science Part 1 Chapter 2 MCQs Set 5
Q21. What is a sea stack?
[A]. A deep depression formed by dissolving limestone
[B]. A ridge of sand carried along by a glacier
[C]. A crescent-shaped dune formed by wind
[D]. An isolated rock pillar left after a coastal arch collapses
Q22. Which pair correctly links a landform with its main forming agent?
[A]. Stalactite — river meander
[B]. Sea cave — desert wind
[C]. U-shaped valley — glacier
[D]. Barchan dune — underground water
Q23. What is a terminal moraine?
[A]. Debris deposited at the end of a glacier
[B]. A sharp ridge between two glacial valleys
[C]. A cave beneath a limestone plateau
[D]. A rock pillar remaining after an arch collapses
Q24. How does a fjord form?
[A]. A river deposits sand at its source
[B]. Rainwater builds a pillar inside a cave
[C]. The sea floods a deep glacial valley
[D]. Wind removes fine particles from a desert
Q25. Which landform is produced by wind erosion rather than wind deposition?
[A]. A yardang
[B]. A barchan dune
[C]. A longitudinal dune
[D]. A star dune
Class 9 Social Science Part 1 Chapter 2 MCQs Set 6
Q26. Which dune is crescent-shaped and associated with limited sand and a mainly single wind direction?
[A]. Longitudinal dune
[B]. Barchan dune
[C]. Star dune
[D]. Parabolic dune
Q27. Which statement correctly describes cave deposits?
[A]. Both are loose sand heaps created by wind
[B]. Stalactites hang from ceilings; stalagmites rise from floors
[C]. Stalactites rise from floors; stalagmites hang from ceilings
[D]. Both are formed only by glacial erosion
Q28. Why can heavy rainfall increase landslide risk on a steep slope?
[A]. Water permanently prevents rocks from moving
[B]. Rainfall makes every slope level immediately
[C]. Heavy rain removes the force of gravity
[D]. Water adds weight and can weaken the stability of slope material
Q29. Which event best describes a glacial lake outburst flood?
[A]. The normal daily rise and fall of tides
[B]. The slow growth of a sand dune
[C]. A sudden release of lake water after its natural dam fails
[D]. A gradual breeze caused by daytime coastal heating
Q30. Which condition most favours a dust storm?
[A]. A sheltered valley with no loose surface particles
[B]. Strong winds over dry, loose soil with little vegetation
[C]. Dense vegetation over moist soil during light rain
[D]. Calm air over permanently waterlogged soil
How to Revise Plate Movements and Landform Formation
- Identify whether the change begins within the Earth or acts at its surface.
- For plate boundaries, establish whether the plates approach, separate or slide past each other.
- For surface processes, identify the agent and decide whether it erodes, transports or deposits material.
- Match the resulting feature to its setting, such as a river valley, coast or desert.
- Compare weathering in place with the removal of material through erosion.
- Draw a simple labelled sketch when the shape of a feature helps explain its origin.
- Connect soil loss and slope instability with vegetation cover and human land use.
- Review a hazard example by separating its physical cause, exposed communities and protective measures.
Key Differences between Erosion and Deposition Landforms
- V-shaped valleys are associated with river erosion; broad U-shaped valleys reflect glacial action.
- A delta forms through deposition near a river mouth.
- Coastal stacks remain after erosion changes an arch and its surrounding rock.
- Stalactites hang from cave roofs, while stalagmites grow upwards from cave floors.
- Divergent plate boundaries can create new crust as plates move apart.
- Continental collision can compress and uplift rocks into fold mountains.
- Wind deposits sand in dunes and also erodes exposed surfaces.
- Moraines consist of material deposited by glaciers.
Explain How Earth Processes Shape Landscapes and Risk
A landform is easier to remember when you can describe the process that produced it. For each feature in this chapter, connect the agent, its action and the resulting shape: a river cuts downwards, a glacier reshapes a valley or wind deposits sand. Then consider how people use that landscape and what difficulties may arise. Farming on slopes, settlement near unstable ground and the removal of vegetation can influence exposure to damage. Review mistakes by identifying which stage of the explanation you misunderstood. A labelled sketch and a short sequence of causes are especially useful for distinguishing features that look similar but form through different processes.
NCERT Solutions for Shaping of the Earth’s Surface
Use NCERT Solutions for Class 9 Social Science Part 1 Chapter 2 — Shaping of the Earth’s Surface to practise longer descriptions of plate movements, surface processes and landforms. Write each process in a clear order, starting with the cause and ending with the feature produced. Where the question concerns a natural hazard, explain how preparedness or land management can reduce harm. Check that any diagram supports the words in your answer and that its labels identify the correct agent, direction or landform. This develops the explanation skills that a multiple-choice answer alone cannot show.
