Earlier this month we had a lot of fun testing a few of our hands-on tabletop activities. On the museum floor at the Lawrence Hall of Science, 70 people, ranging from elementary school-age children to adults, got a sneak preview of these new prototype activities and gave us their feedback to make them better. One of the tabletops we tested was the Seiche Wave Model. The model is a long, narrow tank that can be divided into sections for different colored water of different temperatures. Once the divider is removed, the different temperatures of water form layers, called thermoclines, based on density due to their temperature. By blowing air through straws, visitors saw how wind can make waves on a lake surface and also create internal waves, called seiche waves. Another favorite action children really enjoyed was pouring water through a tube to simulate how streams can produce seiche waves in a lake too.
Kids also liked playing the Algae and Plankton computer games. In this game, visitors learned how to identify different types of plankton and found out what kinds of phytoplankton zooplankton like to eat. Thanks to all the participants and their feedback, we know these activities are on the right track in nurturing curiosity and raising awareness about lakes and we’ve also gained some ideas on how to improve them.
-by Min Shih and edited by Maia Werner-Avidon