Question

Which of the following is most likely caused by chemical weathering?

cirques carved out by a melting glacier


U-shaped valleys formed in a mountain region


rocks and sediment transported and deposited


unrecognizable facial features on a marble statue

Answer 1

Unrecognizable facial features on a marble statue are most likely a result of chemical weathering, which is the alteration of the rock's chemical structure due to acidic solutions such as acid rain.

Step-by-step explanation:

Among the options provided, unrecognizable facial features on a marble statue is most likely caused by chemical weathering. This process involves the alteration of the chemical composition of the rock, particularly through the action of acidic solutions such as acid rain. This can happen over time as the marble statue reacts with the acidic solutions in the air. The sharp and rough features of a statue wear down to become smooth and often intangible, reflecting the impact of both physical and chemical weathering mechanisms. Chemical weathering can also lead to the formation of caves and karst landscapes, as rain mixed with carbon dioxide forms carbonic acid that can dissolve limestone.

Answer 2

D). Unrecognizable facial features on a marble statue.

Step-by-step explanation:

Chemical Weathering is defined as the chemical reaction that takes place between the rain, flowing water, and rocks along with minerals. It results in the decaying of minerals and the rocks for the formation of new minerals, as we as, the soluble salts due to the reaction being highly acidic. Since the reaction is acidic, it causes 'unrecognizable facial features on a marble statue.' Thus, option D is the correct answer.