September 10


First grade continued their study of matter.  We did several experiments with gas (air) and liquid (water).  Two of them follow:

We placed a tissue in the top of a cup.  Then we plunged the cup straight down into a tub of water.  After we lifted the cup straight up, we discovered the tissue was still dry!  What kept the tissue dry?

We placed a note card over the top of a glass of water.  We flipped the cup over, but the water didn’t fall out and the paper stayed in place. Wow, air pressure is strong!

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