Answer key

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Last edited 9 days ago by Learn LoopHQ.

Chapter: 03. Major Landforms Of The Earth

⁠

Section A: Multiple Choice Questions (MCQs)

C) Continent

C) Australia

C) Erosion

D) Fold Mountains

B) North America and South America

Section B: Fill in the Blanks

external

Ural

crater

island

agriculture

Section C: True or False

False

True

False

Section D: Short Answer Questions

A peninsula is a piece of land that is surrounded by water on three sides and is joined to a larger land mass. Example: The peninsular plateau of India.

The two types are old fold mountains (formed over 250 million years ago, with gentle slopes and low altitude) and young fold mountains (formed about 25 million years ago, which are rugged and lofty).

Mountains are a storehouse of water because many rivers originate from glaciers and snow in the mountains. This water is then used for irrigation and generating hydroelectricity.

A tectonic plateau is formed by the upliftment of the earth's crustal plates, causing a large portion of the earth's surface to rise.

Structural plains are plains near a coast that are formed by the uplift of a part of the seafloor. They are typically very flat and broad.

Section E: Diagram-Based Question

The three main parts are the vent, the crater, and the magma chamber (or the cone).

Section F: Long Answer Questions

Volcanic mountains are formed when molten lava, ash, cinder, and dust from deep inside the earth erupt through cracks in the crust. These materials accumulate on the surface, building up a high cone shape over time. A vent is the opening through which the material escapes, and a crater is the funnel-shaped depression at the top. Examples include Mt. Fuji in Japan and Mt. Kilimanjaro in Tanzania.

Fold mountains are formed when the layers of the earth's crust are squeezed and folded by internal forces. They have a wavy, folded appearance. Examples are the Himalayas and the Alps. Block mountains are formed by faulting or fracturing of the earth's crust. The land between two cracks sinks, leaving upstanding blocks on either side. These mountains have steep edges and a flat top. Examples are the Vosges and the Black Forest in Europe.

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