In this experiment, students investigate the unique properties of water through two engaging activities. The first, “Walking Water,” explores capillary action and how water can travel against gravity due to its cohesive and adhesive properties. Colored water moves across paper towels from full cups to empty ones, demonstrating water’s ability to move through narrow spaces.
The second activity, “Drops on a Penny,” compares the surface tension of water and isopropyl alcohol by counting how many drops can sit on a penny before spilling over. This highlights the electrostatic forces and cohesion of water molecules, showing that water has a much stronger surface tension than alcohol. Together, these experiments provide a hands-on understanding of how water behaves at the molecular level.
In this design challenge, students will work together to design a tool or process that successfully removes an invasive species from an ecosystem while minimizing harm to the native species and environment.
In this challenge, students will practice problem-solving and collaboration skills as they design, build, and test their wind turbine
prototypes. Students will explore the role of renewable energy in powering communities, learn about energy transfer and mechanical systems, and gain insight into the importance of sustainable energy solutions.
In this activity, students will read the story "In a Garden" by Tim McCanna. They will learn about the life cycle of a plant, what seeds need to grow, and what keeps seeds from growing. They will then create their own seed house and watch their seeds sprout!
