First and third grade Olympians dove into the Water Olympics, and competed in three events! During the Great Paper Towel Absorption Race, students observed the rate at which H2O was soaked into different materials. Cohesion, the action of H2O molecules sticking together, was examined throughout the Amazing Water Race while, using toothpicks, students navigated water through a maze covered with a waxy surface. Surface tension, the skinlike surface on water, was one again examined during the Fold and Float competition while students tried to make a piece of aluminum foil sink!
What did you learn during the events? Which competition was your favorite and why? What are you wondering now?
Visit the following links if you are interested in conducting some at-home investigations and learning more about the properties of water:
http://pbskids.org/zoom/activities/sci/floatingpaperclips.html
http://www.scholastic.com/magicschoolbus/games/experiments/wacky