by Mark Ogrentz | Dec 8, 2023
Students perform one of the first steps that environmental engineers do to determine water quality—sampling and analysis. Student teams measure the electrical conductivity of four water samples (deionized water, purified water, school tap water and a salt-water...
by Mark Ogrentz | Dec 8, 2023
Students extend their understanding of surface tension by exploring the real-world engineering problem of deciding what makes a “good” soap bubble. Student teams first measure this property, and then use this measurement to determine the best soap solution...
by Mark Ogrentz | Dec 8, 2023
Using a household fan, cardboard box and paper towels, student teams design and build their own evaporative cooler prototype devices. They learn about the process that cools water during the evaporation of water. LINKS Swamp Cooler design activity
by Mark Ogrentz | Dec 8, 2023
In the presence of water, citric acid and sodium bicarbonate (aka baking soda) react to form sodium citrate, water, and carbon dioxide. Students investigate this endothermic reaction. LINKS The Big Chill water chemistry activity
by Mark Ogrentz | Dec 8, 2023
In this activity, student teams design, prototype and test piping systems to transport water from a storage tank to an existing Tippy Tap hand-washing station, thereby creating a more efficient hand-washing station. Through this example service-learning engineering...
