Question

The steep rocky coast rising almost vertically above seawater is called ___.
A) Sea waves
B) Sea arches
C) Stacks
D) Seacliff

Answer 1

Hint: A steep coast is a section of shoreline where the terrain abruptly drops into the sea. The steepest coasts are rocky cliffed coasts (also known as abrasion coasts), which have a severe declivity due to wave action erosion

Complete answer:
A cliff is a section of rock with a general angle defined by the vertical, or nearly vertical, in geography and geology. Cliffs are formed by weathering and erosion, as well as the gravitational force.

Let us look at the given options:
A) Sea waves: This option is incorrect because a sea wave, also known as a wind-generated wave, is a water surface wave that occurs on bodies of water's free surface. Wind waves are created when the wind blows over a fluid surface, with the fetch being the contact distance in the direction of the wind. It is not a steep rocky coast rising almost vertically above seawater.

B) Sea arches: This option is incorrect because sea arches are not a steep rocky coast rising almost vertically above seawater. Mother Nature, with a little help from the waves, has constructed stunning sea arches. They're usually made of soft rock that has been eroded over millions of years by waves crashing on the shore, cutting caves and tunnels in the rock.

C) Stacks: This option is incorrect because stacks are not a steep rocky coast rising almost vertically above seawater. A stack, also known as a sea stack, is a geological landform generated by wave erosion that consists of a steep and typically vertical column or columns of rock in the water along a shore. Wind and water, two processes of coastal geomorphology, build stacks throughout time.

D) Seacliff: This is the correct answer. A cliff is a vertical, or almost vertical, a pile of rock that climbs very high and runs straight up and down. The steep rocky coast rising almost vertically above seawater is called a sea cliff.

Thus, the correct answer is Option (D) i.e, Sea cliff.

Note: On the beaches, in mountainous locations, along escarpments, and beside rivers, sea cliffs are common. Cliffs are frequently produced by weather-resistant and erosion-resistant rock. Sandstone, limestone, chalk, and dolomite are the sedimentary materials most likely to generate cliffs. Cliffs are frequently formed by igneous rocks such as granite and basalt.