Street Canyons and Their Effects

Watch the clip - https://www.youtube.com/watch?v=dJmkaQO5IOY

What is a street canyon?

• A narrow street with tall buildings on either side

• A wide street with short buildings on either side

• A street with no buildings on either side

• A street with trees on either side

What is the main problem caused by wind tunnels in street canyons?

• Getting hit by signposts

• Increased temperature

• Air pollution

• Strong breeze

What is the venturi effect?

• The acceleration of wind due to varying street width

• The trapping of air beneath buildings

• The formation of vortexes in street canyons

• The increase in temperature caused by street canyons

Which direction do streets oriented north to south store the most heat?

• East

• West

• North

• South

What is the term for when cities are hotter than the suburbs around them?

• Urban heat islands

• Wind tunnels

• Venturi effect

• Street canyons

What is the main problem caused by wind vortexes in street canyons?

• Increased temperature

• Air pollution

• Strong breeze

• Getting hit by signposts

Why does the inversion in street canyons trap traffic pollutants?

• Because it prevents sunlight from entering the canyon

• Because it keeps cold air at the bottom

• Because it accelerates wind speed

• Because it forms vortexes

What is the most effective strategy to reduce street-level pollution in street canyons?

• Regulating the height of buildings

• Setting buildings back further from the street

• Stepping buildings at the top

• Growing plants vertically

What is the main advantage of growing plants vertically in street canyons?

• It reduces heat storage

• It reduces wind speed

• It absorbs CO2 and pollutants

• It increases airflow

What is the hope for reducing the effects of street canyons?

• Vertical vegetation becomes less expensive

• People stop driving as much

• Regulating the height of buildings

• Setting buildings back further from the street