Bell Work: 9/16/14About every other rainfall, what happens

to the sewers in New York City? How does this affect the people of New York City?

How do green roofs affect the surface temperature of a building?

How do green roofs cool the surface of the building?

Describe a cost-effective way to reduce storm water runoff.

What are some other advantages of green roofs?

Essential Questions to ponder…

Can we analyze and evaluate the impact of

man’s use of earth’s land, water, and

atmospheric resources?

StandardsSPI 0707.7.7 Analyze and

evaluate the impact of man’s use of earth’s land,

water, and atmospheric resources.

Engineering Green RoofsPart I:Engineer a model building at least 23

centimeters (9 inches) highMaterials for building structure: 40 index cards,

30 cm (1 ft.) of foil, and a roll of tape1 cup of water will be added to your rooftop (none

may run off); your building must support the weight of the saturated green roof.

Part II:Engineer a roof for the building that reduces

runoff by absorbing waterMaterials for roof: soil, gravel, moss, and sand

Imagine: Research Green Roofs by ExperimentingMake a plan with your team to test the

different types of green roofs.What will be your control factors and

variables (independent and dependent)? How will your control group be different from your experimental groups?Record these in your STEM notebook

You can earn up to $500 for detailed and accurate data.

ReflectWhich natural material do you

think works best to reduce runoff? Why do you think so?

Use a Post-It Note to “tweet” about the following question:

What do you think the impact would be of adding green roofs to all buildings in your model city?

Tweet a response…