density
Who are you calling dense?
The Explorers spent a session in early December 2011 proving that water and oil indeed do not mix, but that air bubbles can be convinced to travel back and forth between the two.
Liquid Fireworks
The Explorers finished off a year of experiments with the now-annual (by popular demand, with the emphasis on the word “demand”) pop bottle geysers activity.
This impressive, rather messy display is the result of a simple physical reaction that happens when two substances meet. In this case, the culprits are the small round candies known as Mentos and carbonated liquid—otherwise known as soda pop. The secret is a process called “nucleation.”
Tags: 2010 - 2011 school year, density, expansion, gas, liquid, nucleation, pop, pop bottle, pressure, soda, soda pop, states of matter
That 70s Experiment
If you are a child of the 1970s, you probably spent your fair share of time gazing at a lava lamp. Watching those brightly lit colored blobs slowly floating up and down, endlessly over and over—what could be groovier?
The Explorers spent a meeting building their own version of this longtime favorite—but with a new twist.
Full of Hot Air
At the end of April 2009, the Explorers investigated the properties of density, using what was surely one of the strangest contraptions to ever appear in (and above) their schoolyard.
As everyone knows, a hot air balloon rises because of…well, hot air. No helium or other “trick” is used, just the properties of air itself. How does this work? It all has to do with density.
Current weather
OH - Dayton / Wright-Patterson Air Force Base
- Overcast
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- Rel. Humidity: 74 %
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Thu, 02/09/2012 - 22:55