Landforms — Set 4
Geography · भू-आकृतियां · Questions 31–40 of 40
Which landform is an arm of the sea extending into the land, smaller than a gulf?
Correct Answer: C. Bay
A bay is a recessed, coastal body of water that directly connects to a larger main body of water. It is typically smaller and less enclosed than a gulf. Famous examples include the Bay of Bengal and Hudson Bay.
The 'Grand Canyon' in the USA was primarily formed by the erosive action of which river?
Correct Answer: C. Colorado
The Grand Canyon was carved over millions of years by the Colorado River. It is one of the world's most spectacular examples of river erosion. The arid climate helps maintain its steep, sharp-edged cliffs.
Which of the following is a depositional feature of sea waves?
Correct Answer: C. Spit
A spit is a narrow coastal landform that extends from a shore into the sea, created by longshore drift and wave deposition. The other options (arch, cave, stack) are all features formed by the wearing away of rock. Spits often curve at the end due to current changes.
The term 'Arete' is used to describe which glacial landform?
Correct Answer: B. A sharp, narrow mountain ridge
An arete is a thin, knife-like ridge of rock which is typically formed when two glaciers erode parallel U-shaped valleys. The ridge between the two valleys becomes sharpened into a jagged peak. They are common features in high alpine terrain.
Which type of lake is formed when a river loop is cut off by silt and sediment?
Correct Answer: B. Ox-bow Lake
Ox-bow lakes are U-shaped bodies of water that form when a wide meander from the main stem of a river is cut off. This happens during floods when the river breaks through the narrow neck of a meander. They are evidence of a river's changing course over time.
In desert geography, what is a 'Playa'?
Correct Answer: D. A flat-bottomed basin that temporarily fills with water
A playa is a dry, flat lake bed in an undrained desert basin that periodically fills with water after heavy rain. When the water evaporates, it often leaves behind a layer of salt or clay. Playas are among the flattest natural surfaces on Earth.
Which of the following is a landform created by volcanic activity?
Correct Answer: A. Caldera
A caldera is a large, cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano. It is much larger than a typical crater. Many calderas eventually fill with water to form large lakes.
What is the term for the process by which a river wears away its bed and banks?
Correct Answer: C. Corrasion
Corrasion, also known as abrasion, is the process of mechanical erosion where rocks and sediment carried by a river grind against the riverbed. This action facilitates the deepening and widening of the river valley. It is one of the four main processes of river erosion.
A 'Tombolo' is a landform that connects an island to the mainland using?
Correct Answer: A. A sandbar or spit
A tombolo is a depositional landform in which an island is attached to the mainland by a narrow piece of land such as a spit or bar. It is formed by the refraction of waves around the island. Over time, sediment builds up to form a permanent link.
What type of landform is the 'Tibetan Plateau'?
Correct Answer: C. Intermontane Plateau
The Tibetan Plateau is an intermontane plateau because it is completely enclosed by mountain ranges like the Himalayas and Kunlun. It is the highest and largest plateau in the world. Such plateaus are formed during the process of mountain building.