5.13 - Methods to Reduce Urban Runoff Quiz

What is the primary purpose of green roofs in reducing urban runoff?

• Providing habitat for wildlife

• Filtering air pollutants

• Absorb and retain rainwater

• Reducing noise pollution

How do green roofs help in reducing the urban heat island effect?

• By increasing the amount of impermeable surfaces

• By attracting more sunlight and heat

• By providing insulation and evapotranspiration

• By reducing the amount of vegetation in urban areas

What is the main advantage of using permeable pavement in urban areas?

• Increases stormwater runoff and depletes groundwater

• Reduces stormwater runoff and helps to recharge groundwater

• Causes pollution and contamination of groundwater

• Leads to flooding and waterlogging in urban areas

How does permeable pavement help in reducing stormwater runoff?

• It increases the amount of water running off into the streets

• It creates more storm drains to handle the excess water

• It has no impact on stormwater runoff

• It allows stormwater to infiltrate into the ground instead of running off into storm drains.

What is the function of a rain garden in managing urban runoff?

• Reducing air pollution

• Absorb and filter stormwater

• Attracting more wildlife

• Causing more flooding

How does a rain garden help in improving water quality?

• By filtering pollutants and sediments from stormwater runoff before it reaches the water bodies.

• By reducing the amount of water reaching the water bodies

• By diverting stormwater directly into water bodies

• By increasing the amount of pollutants in stormwater runoff

What is the role of constructed wetlands in reducing urban runoff?

• Increasing the amount of pollutants in the water

• Causing more erosion and sedimentation

• Acting as natural filters and removing pollutants and sediments from the water

• Having no impact on urban runoff

How do constructed wetlands help in enhancing biodiversity in urban areas?

• Constructed wetlands have no impact on biodiversity in urban areas.

• Constructed wetlands contribute to the pollution of urban waterways.

• Constructed wetlands provide a breeding ground for mosquitoes and other pests.

• Constructed wetlands provide habitat for a variety of plant and animal species.

What is the purpose of infiltration trenches in managing stormwater in urban areas?

• To divert stormwater to flow directly into rivers and lakes

• To create a barrier to prevent stormwater from entering the ground

• To capture and temporarily store stormwater, allowing it to slowly infiltrate into the ground

• To release stormwater quickly into the ground without any storage

How do infiltration trenches help in recharging groundwater?

• By causing soil erosion

• By allowing stormwater to percolate into the ground

• By increasing surface runoff

• By preventing water from percolating into the ground