Weathering and Erosion Quiz

What evidence of chemical weathering is observed at the old school building?

• Tree roots pushing up the sidewalk

• Cracks in the sidewalk

• Erosion of brick facings

• Color changes in the rock

How does water contribute to mechanical weathering of sidewalks?

• By reacting with copper

• By causing color changes

• By dissolving the rock

• By freezing and expanding in cracks

What precaution was taken when planting trees near the school?

• Covering the roots with concrete

• Using chemical treatments on the roots

• Ensuring they were far from the sidewalk

• Planting them close to the sidewalk

What type of weathering causes the fading of engraved words on buildings in downtown Cambridge?

• Physical weathering

• Biological weathering

• Chemical weathering

• Mechanical weathering

What is a common cause of chemical weathering in urban environments?

• Tree roots growing

• Water freezing in cracks

• Acids in rain reacting with rock

• Wind eroding surfaces