The Penny Lab

Using a medicine dropper my class dropped some water on the top of a penny. But before we did this we estimated how many our partner would be able to put onto his or her penny. So then drop by drop we put water on to the tops of the pennies to see if our estimations were close. Since the penny has edges on the outsides it helps to confine more water than an object without edges. The water comes out and bulges away from the penny once the penny is completely covered. But once the water over flows all of the water will go, unless it is stopped by the edge of the penny.