CBSE Class 9 Social Science Shaping of the Earth’s Surface (Class 9 NCERT New) Quiz 3

1. Fill in the blank: A narrow valley with steep walls is called ________.

A gorge B canyon rim C delta D cirque

2. Fill in the blank: A ________ is a high landmass with sharply sloping surfaces.

A mountain B plain C plateau D basin

3. Fill in the blank: A relatively flat and low-lying vast expanse of land is called ________.

A plateau B plain C valley D cliff

4. Fill in the blank: ________ occur due to sudden failure of natural dams that hold back glacial lakes.

A Glacial Lake Outburst Floods B Storm surges C Tidal bores D Dune formation

5. Plate tectonics is best described as.

A A theory that Earth’s lithospheric plates move over the asthenosphere, causing earthquakes, volcanoes and mountain building B A process in which only continents drift while oceans remain fixed C The breaking of rocks in place without any movement of material D Seasonal shifting of winds in tropical regions

6. Which combination correctly lists the three main layers of the Earth from the surface to the centre?

A Crust, mantle, core B Mantle, crust, core C Crust, core, mantle D Core, mantle, crust

7. Weathering is.

A The disintegration and decomposition of rocks in situ by physical, chemical or biological processes B The removal and transportation of rock debris by running water C The sudden shaking of the Earth’s surface D The deposition of sediments in river deltas

8. Erosion is.

A The breakdown of rocks without movement B The removal and transportation of weathered material by agents like rivers, wind and glaciers C The formation of new rocks deep within the Earth D The slow flow of ice within a glacier

9. Which pair lists two agents of erosion?

A Running water and wind B Faulting and folding C Earth’s rotation and revolution D Humidity and temperature

10. A glacier is.

A A large, persistent mass of moving ice formed from compacted snow B A narrow sea inlet with steep sides C A cone-shaped volcanic hill of ash D A submerged coastal sandbar