Question

Which of the following is true about how weathering affects fractured rocks?

A)Weathering affects rocks from the outside in, forming an outer weathered zone or rind.

B)Weathering attacks corners from three sides and so these are preferentially removed.

C)Preferential weathering along fractures can cause blocks to become rounded.

D) All of these are correct

Answer 1

Weathering affects fractured rocks in multiple ways, including the formation of an outer weathered zone, preferential removal of corners, and the rounding of blocks. The correct option is D) All of these are correct.

Step-by-step explanation:

Weathering affects fractured rocks in multiple ways. The correct option is option D) All of these are correct.

1. Option A: Weathering affects rocks from the outside in, forming an outer weathered zone or rind. This occurs when the outer layers of the rock are exposed to weathering agents such as water, wind, and temperature changes. Over time, these agents cause the outer layers to break down, resulting in the formation of a weathered zone or rind.
   
2. Option B: Weathering attacks corners from three sides and removes them preferentially. This occurs when weathering agents focus their effects on the corners or edges of fractured rocks. The corners are more vulnerable to weathering as they are exposed to weathering agents from three sides, resulting in their preferential removal.
   
3. Option C: Preferential weathering along fractures can cause blocks to become rounded. This occurs when weathering agents concentrate their effects on the fractures or cracks in rocks. The repeated exposure to weathering agents along the fractures can lead to the gradual rounding of the blocks.
   

Therefore, all of the given options are correct about how weathering affects fractured rocks.