Question

Where can you observe weathering for the following items?

A. Flakes of brick: Found on the outer walls of old buildings, especially in regions with frequent temperature changes, where freeze-thaw cycles cause mechanical weathering.

B. Cracks in rocks: Often observed in mountainous regions due to the expansion and contraction of rocks caused by temperature variations, leading to mechanical weathering.

C. Lichen growing on rocks: Found in damp environments where lichen contribute to chemical weathering by secreting acids that break down minerals.

D. Roots or plants growth making cracks in concrete: Common in urban areas where plant roots penetrate concrete surfaces, causing mechanical weathering as the roots expand and create cracks.

Answer 1

Weathering can be observed in flakes of brick, cracks in rocks, lichen growing on rocks, and roots or plant growth making cracks in concrete.

Step-by-step explanation:

Weathering can be observed in different items in various environments. For example, flakes of brick can be found on the outer walls of old buildings in regions with frequent temperature changes, where freeze-thaw cycles cause mechanical weathering. Cracks in rocks are often observed in mountainous regions due to the expansion and contraction of rocks caused by temperature variations, leading to mechanical weathering. Lichen growing on rocks can be found in damp environments where lichen contribute to chemical weathering by secreting acids that break down minerals. Lastly, roots or plant growth making cracks in concrete is common in urban areas where plant roots penetrate concrete surfaces, causing mechanical weathering as the roots expand and create cracks.