Question

identify each event as the result of mechanical weathering or chemical weathering.

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$$\begin{tabular}{|l|l|} \\hline the minerals in a marble statue react with water to form acids and pores in the structure. & \\\\ \\hline a piece of rock crumbles after being constantly thrashed by strong waves. & \\\\ \\hline industrial runoff forms cracks in a rocky structure in its path. & \\\\ \\hline the rocks in a region are streaked orange after being exposed to repeated rains. & \\\\ \\hline \\end{tabular}$$

mechanical weathering
chemical weathering

Explanation:

Define weathering types

Weathering breaks down rocks. Geological Processes include mechanical and chemical weathering. Mechanical weathering physically breaks rocks. Chemical weathering alters rock composition.

Analyze the first event

"The minerals in a marble statue react with water..."
Chemical reactions alter the minerals.
This represents chemical weathering.

Analyze the second event

"A piece of rock crumbles after being constantly thrashed by strong waves."
Physical force breaks the rock.
This represents mechanical weathering.

Analyze the third event

"Industrial runoff forms cracks in a rocky structure in its path."
The physical flow and pressure of runoff create cracks.
This represents mechanical weathering.

Analyze the fourth event

"The rocks in a region are streaked orange after being exposed to repeated rains."
Rain causes oxidation (rusting) of iron minerals.
This represents chemical weathering.

Answer:

Event	Weathering Type
A piece of rock crumbles after being constantly thrashed by strong waves.	mechanical weathering
Industrial runoff forms cracks in a rocky structure in its path.	mechanical weathering
The rocks in a region are streaked orange after being exposed to repeated rains.	chemical weathering