Here is another great discrepant event (read more about discrepant events here)! This one explores some of the science behind air pressure and different states of matter. It is demonstrated by two elementary school teacher, Gerald Johnson. Enjoy.
Saturday, December 27, 2008
Fun With Discrepant Events: Pressure & States of Matter
Here is another great discrepant event (read more about discrepant events here)! This one explores some of the science behind air pressure and different states of matter. It is demonstrated by two elementary school teacher, Gerald Johnson. Enjoy.
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Great demonstration. However, burning the oxygen is not the cause of the rising water level. As the candle burned inside the glass, air bubbles were pushing out at the bottom as a result of the hot air expanding. When the oxygen was consumed, the candle went out and the air cooled. The cooler air takes up less volume , exerts less pressure. Air pressure outside is greater and the level inside rises.
Great demonstration. However, burning the oxygen is not the cause of the rising water level. As the candle burned inside the glass, air bubbles were pushing out at the bottom as a result of the hot air expanding. When the oxygen was consumed, the candle went out and the air cooled. The cooler air takes up less volume , exerts less pressure. Air pressure outside is greater and the level inside rises.
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