Bell Work: 9/17/14 Besides roofs impacting storm runoff, what other parts of the city are also impacting runoff? How can those parts of the city be changed to prevent polluted runoff?

Can we analyze and evaluate the impact of man’s use of earth’s land, water, and atmospheric resources?

SPI Analyze and evaluate the impact of man’s use of earth’s land, water, and atmospheric resources.

Engineering Green Roofs Part I: Engineer a model building at least 23 centimeters (9 inches) high Materials for building structure: 40 index cards, 30 cm (1 ft.) of foil, and a roll of tape 1 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 water Materials for roof: soil, gravel, moss, and sand

Imagine: Research Green Roofs by Experimenting Make 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.

Which natural material do you think works best to reduce runoff? Why do you think so?

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

Imagine First we examined roof surfaces and their effect on runoff. What is it useful to add green roofs to buildings? In cities, why is it useful to have paved areas? How do paved areas add to the runoff problem? Today we are going to investigate permeable pavements. Reflect back to the introduction video. There was a technology called porous or permeable pavement. How did this technology work? What does the word permeable mean?

$$$ Check  Green Roof Data Chart= $500 Today you will have a cost restraint of $200. You may not spend any of your green roof money; however, I will give you a $200 allowance to test permeable pavement. There is a catch, your pavement must meet two criteria: 1. The pavement must absorb water. 2. The pavement must be smooth enough for people to use for walking and driving.

$$$ Money  Permeable Pavement Data Chart= $500  Glue the Materials Price List into your STEM notebook.  Create the chart to the right in your STEM notebook:

Imagine: Action Research List your control (variables) factors and the independent and dependent variables. Place the small foil tray into the large foil tray to catch extra water…watch me! Test the pavements in the small foil tray. Test the usability of the pavement by seeing whether a wind-up toy can walk on their pavement in a straight line. Spray the pavement with 20 squirts of water. Wait 20 seconds. Record how well the water soaks in. Be prepared to share your data with the whole class after testing.

How can we, as environmental engineers, use what we learned in our investigation to keep polluted runoff out of the river?

Use a Post-It Note to “tweet” about the following question: Use a Post-It Note to “tweet” about the following question: What do you think the impact would be of changing the pavement to permeable pavement? Tweet a response…