Cork on water experiment * age 6-8 * For this experiment Nate tries to get the cork to float in the center of the glass but it always moves to the edge. Then he starts to add water to the glass. As the glass becomes filled to the top it begins to dome above the rim and the cork floats to the highest point which is the center of the glass. 👀 Materials needed: glass of water, cork, dropper, tray to catch excess water (optional).