Pressure

Mary's Science Fair Experiment involved heating up marshmallows in the microwave. I think that sums her personality up pretty well. She is delighted with her display which involved marshmallows in ziploc bags attached to the board, her observation journal, her report about pressure and the photographs she took of the marshmallows before and after.

Popcorn does not expand when heated like marshmallows do. She attached her popcorn samples to the board too.

She has two big bowls of samples - marshmallows in one and popcorn in the other. She is delighted that she can hand out something to the kids that go by her booth. I tried to encourage her to take dixie cups and a set of tongs for the marshmallows. I know that little elementary school kids are just going to shove their hands in the bowl of popcorn. I am trying not to imagine the germ growth. Then again, maybe that can be next year's experiment.