Page 186 - Demo

Environmental Science
Environmental Science—Pollution, continued
Understanding Your Carbon Footprint—
Student Activity Kit
By: The Flinn Staff
How big is your “carbon footprint?” The term is so widely used by the media and the general public that its scientific meaning is often blurred. A carbon footprint is a numerical value that summarizes the amount of carbon dioxide or equivalent greenhouse gas released by energy-dependent activities and processes. In this activity, students will analyze data and contributions from utility bills, modes of transportation, and everyday activities. The relative contributions of different activities will be graphed to explore meaningful ways to reduce emissions and their carbon footprint. A great integrated science and math activity for all students! Includes detailed back- ground information and procedures as well as reproducible student worksheets and complete Instructor’s Notes.
Complete for all students to work individually. Handouts and work- sheets are reproducible.
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Understanding Your Carbon Footprint—Student Activity Kit AP7322
Catalog No.
Description
Price/Each
AP7322
Understanding Your Carbon Footprint— Student Activity Kit
$10.75
Cleaning Up with Iron—
Demonstration Kit
By: The Flinn Staff
Demonstrate the “potential” of using metallic iron to clean up contaminated groundwater! The chemical principle is simple—iron is a good reducing agent. It reduces toxic organic compounds, such as chlorinated solvents, and converts them to less harmful substances. In this demonstration, organic dyes are used as model substrates to illustrate the ability of metallic iron to reduce organic compounds. Interesting background information provided with the kit relates the color changes that are observed in this demonstration to the proper- ties of permeable reactive barriers (PRBs) containing iron. PRBs are an excellent example of new technology that was created to solve environmental problems. Since 1994, when they were first invented, PRBs have been installed at more than 50 hazardous waste sites across the country! Use this simple demonstration to show students how advances in “simple science” have improved our lives and our environment.
Concepts: Groundwater remediation, oxidation–reduction, permeable reactive barrier, chlorinated organic solvents.
Time Required: One class period
Materials Provided: Indigo carmine dye, iron powder, methylene blue solution, square bottles.
Catalog No.
Description
Price/Each
AP7091
Cleaning Up with Iron—Demonstration Kit
$41.85
Groundwater Simulation Model—
Guided-Inquiry Kit
By: The Flinn Staff
Investigate groundwater-related concepts while designing and building your own simulated groundwater model! In this inquiry-based activ- ity, a list of groundwater-related features and specific materials will be given to each student group. Students will then design and carry out a procedure to create these features and test their own simulated groundwater models. Aquifers, restrictive barriers, pollution sources, aerated zones and saturated zones, will all be constructed and explored in this all-inclusive, guided-inquiry kit. Includes a detailed back- ground section, Instructor’s Notes and tips, and reproducible student worksheets.
Complete for 30 students working in pairs.
Cleaning Up with Iron—Demonstration Kit AP7091
Catalog No.
Description
Price/Each
AP7368
Groundwater Simulation Model— Guided-Inquiry Kit
$81.60
ENVIRONMENTAL SCIENCE—POLLUTION continued on next page.
Groundwater Simulation Model—Guided-Inquiry Kit AP7368