Question

using the correct label to each event. each label can be used more than once. identify each event as the result of mechanical weathering or chemical weathering. mechanical weathering chemical weathering the minerals in a riverbed solution react with water to form acids and pores in the structure. a piece of rock crumbles after being constantly washed by strong waves. industrial runoff forming cracks in a rocky structure in its path. the rocks in a region are streaked orange after being exposed to rainwater rivers

Explanation:

To solve this, we analyze each event based on the definitions of mechanical and chemical weathering:

1. "The minerals in a rock... form acids and pores"

• Explanation: Involves chemical reactions (minerals reacting with water to form acids), so this is chemical weathering.

2. "A piece of rock crumbles... washed by strong waves"

• Explanation: Physical breakdown (waves physically eroding the rock) without chemical change, so this is mechanical weathering.

3. "Industrial runoff forming cracks..."

• Explanation: Industrial runoff (containing chemicals) causes chemical reactions to form cracks, so this is chemical weathering.

4. "The rocks... turned orange... exposed to rainwater"

• Explanation: Chemical reaction (oxidation or other chemical change from rainwater) causes color change, so this is chemical weathering.

Final Categorization:

Event Description	Type of Weathering
A piece of rock crumbles after being constantly washed by strong waves.	mechanical weathering
Industrial runoff forming cracks in a rocky structure in its path.	chemical weathering
The rocks in a region are turned orange after being exposed to rainwater.	chemical weathering

Answer:

To solve this, we analyze each event based on the definitions of mechanical and chemical weathering:

1. "The minerals in a rock... form acids and pores"

• Explanation: Involves chemical reactions (minerals reacting with water to form acids), so this is chemical weathering.

2. "A piece of rock crumbles... washed by strong waves"

• Explanation: Physical breakdown (waves physically eroding the rock) without chemical change, so this is mechanical weathering.

3. "Industrial runoff forming cracks..."

• Explanation: Industrial runoff (containing chemicals) causes chemical reactions to form cracks, so this is chemical weathering.

4. "The rocks... turned orange... exposed to rainwater"

• Explanation: Chemical reaction (oxidation or other chemical change from rainwater) causes color change, so this is chemical weathering.

Final Categorization:

Event Description	Type of Weathering
A piece of rock crumbles after being constantly washed by strong waves.	mechanical weathering
Industrial runoff forming cracks in a rocky structure in its path.	chemical weathering
The rocks in a region are turned orange after being exposed to rainwater.	chemical weathering