Mentos Geyser Experiment | Science Experiments | Steve Spangler Science

It’s been called the “vinegar and baking soda” reaction for a new generation. While science teachers have been dropping candies and mints into 2-liter bottles of soda for years in an effort to release all of the dissolved carbon dioxide, the Mentos and Diet Coke reaction became world famous in 2005. Continue reading

Expanding Your Lungs


The human body requires oxygen to live.  This oxygen is used by the body, which then expels carbon dioxide.  As you sit in the chair, unconsciously your lungs pull in air about 30 times every minute, and push out carbon dioxide just as often. The diaphragm is a vital muscle that contributes to that mechanical activity as it pulls down the lungs which then expand taking in air.  How do the lungs and diaphragm work together to compete this work?

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