A rock subjected to physical weathering will cause a/an: Select one A. increase

Question

A rock subjected to physical weathering will cause a/an: Select one A. increase in surface area and an increase the rate of chemical weathering B. increase in surface area and a decrease the rate of chemical weathering C. decrease in surface area and an increase the rate of chemical weathering D. decrease in surface area and a decrease the rate of chemical weathering Which of the following is NOT an example of physical weathering? Select one: A. the forces created by freezing and thawing of water resulting in fracturing rock B. the splitting of a rock by a tree root C. the oxidation of iron silicates n a basalt D. crystals of salt and other minerals that exert an outward force on fractures as they grow E. all of these are examples of physical weathering What is the main type of weathering illustrated by this weathered limestone?

Explanation / Answer

ans 1) option A-

increase in surface area and increase in rate of chemical weathering

because of physical weathing the rock will disintegrate leading to increase in surface area and because of disintegration chemical weathering will also increase because it woul now be easier for the chemical agents to attack the disintegrated rock.

ans 2 - option c

oxidation comes under chemical weathering.

oxidation of iron silicates into basalt.

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