(i) What causes the relief features of the continents?
(a) Oceans
(b) Lithospheric plates
(c) Wind and rain
Ans: (b)
Relief features are caused by the movement of lithospheric plates.
(ii) Which type of mountain is formed by the compressive movements of the Earth's lithospheric plates?
(a) Block mountains
(b) Volcanic mountains
(c) Fold mountains
Ans: (c)
Fold mountains are formed by compressive movements.
(iii) What is the highest plateau in the world?
(a) Colorado Plateau
(b) Tibetan Plateau
(c) Deccan Plateau
Ans: (b)
The Tibetan Plateau as the highest plateau.
(iv) Which external process is responsible for wearing down old features through erosion?
(a) Volcanic eruptions
(b) Wind and rain
(c) Plate tectonics
Ans: (b)
Exogenic processes, such as wind and rain, cause erosion.
(v) What is the main factor that makes plains densely populated?
(a) Fertile soil
(b) High mountains
(c) Harsh climate
Ans: (a)
Plains are densely populated because they provide fertile agricultural land.
(i) Mountains are landforms that are raised steeply, forming peaks, above the surrounding land. Most mountains are formed as a result of ____________ movements—folding, faulting, or volcanic eruptions.
Ans: Earth
Most mountains are formed as a result of Earth movements.
(ii) Block mountains are formed when tectonic plate movements cause __________ or fracturing of the Earth’s lithospheric plates.
Ans: Faulting
Block mountains are formed by faulting or fracturing.
(iii) Plateaus are also called flat-topped mountains or __________ because their flat tops look like tables rising steeply from the surrounding lowlands.
Ans: Tablelands
Plateaus are sometimes referred to as flat-topped mountains or tablelands.
(iv) Plains are flat and low-lying areas, not more than ________ above sea level.
Ans: 200 m
Plains are described as flat and low-lying areas, not exceeding 200 meters above sea level.
Ans:
(i) Mountains formed within the last 40 million years are known as old fold mountains.
Ans: False
(ii) Plateaus are found 200 meters below sea level.
Ans: False
(iii) Plains provide the most fertile agricultural land.
Ans: True
(iv) Plateaus are never surrounded by mountains.
Ans: False
(v) Mt Pelee is an example of a volcanic mountain.
Ans: False
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65 videos|125 docs|25 tests
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