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After School Week 8

Engineering the Earth: Exploring Hydroelectric Energy

Let’s create energy with renewable resources! This week the girls created water wheels just like Water Resource Engineers to see how hydroelectric power is created. The students used a foil circle and cut wedges into 4 or 8 blades then stuck a pencil through the middle. They placed it under running water and analyzed the hydropower in trials. 

Posted in After School Blog


After School 'To Go' Week 7

Biomass: Biofuels

Now that the girls are aware that nonrenewable resources cannot be used again, their task was to come up with an alternative resource for energy. Biofuel engineers figure out ways to use animal and plant wastes as fuels. Students mixed warm water, yeast, and sugar in a bottled water as they watched the balloon expand. 

Posted in After School Blog


Hands-On Wednesday

Steel Wool & Vinegar Reaction

Want to see a chemical reaction release energy in the form of heat? Soak some steel wool in vinegar for a minute and then place it in another beaker. Monitor the initial temperature and compare it to the temperature after 5 minutes in the covered container. The beaker might even begin to get foggy as the temperature increases! 

Posted in STEM Hands On


After School Week 7

Engineering the Earth: Exploring the Effects of Oil Spills

Can you recall the last oil spill? The impact can be severe, but with the help of environmental scientists many animals can be saved. Students observed a clean feather and then the feather dipped in vegetable oil with cocoa powder. The girls used Dawn dishwashing liquid and water to clean the oil away from the feather. One girl said, “I took a lot to wash it off.” Imagine a washing a whole bird!

Posted in After School Blog

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