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BTAS! Science Cafe!

i Jan 17th by

Our most recent BTAS! program was a science cafe!  We offered two scientific demonstrations, science trivia with prizes, and Bill Nye the Science Guy!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A hard boiled egg didn’t come close to fitting through the mouth of these old milk bottles.  However, when the staff placed a burning piece of paper in the bottle, the egg was sucked through the mouth like magic!  It wasn’t magic though, it was science.  The air in the bottle heated and expanded while the flames were burning.  Then, when the fire went out, the air cooled and the air pressure outside of the bottle exceeded the pressure on the inside.   This change in pressure forced the egg into the bottle.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The next experiment was called elephant toothpaste.  Teens carefully worked together to combine hydrogen peroxide, food coloring, yeast, warm water, and dish soap.  A reaction ensued, causing foam to burst out of the bottle!  The yeast acted to remove the oxygen from the hydrogen peroxide, forcing bubbles rapidly out of our bottles!

 

 

 

 

 

 

 

 

 

 

 

 

 

Next we enjoyed a home cooked dinner and Bill Nye the Science Guy!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

We finished with science trivia.  One student won the grand prize.  His new shirt states, “I wear this shirt periodically!”