geomorphology & earth landforms section 8 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Answer: (b)

Answer: (c)

The Block Mountains were formed on the crust due to tension. Faults are formed due to tensional forces.

A part of the land block is depressed so that the remaining block stands conspicuously above the surroundings. Mountains formed in this way are called Block Mountains and the depressed portion is known as Rift Valley.

Answer: (d)

Answer: (c)

Karst topography, a landscape formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum, characterized by underground drainage systems with sinkholes and caves. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer.

They are common where the rock below the land surface is limestone or other carbonate rock, that can be dissolved naturally by circulating groundwater.

Answer: (d)

Shale, sandstone and limestone are classic examples of sedimentary rocks; Marble is a type of metamorphic rock. It is a non-foliated metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite.