This lesson focuses on the diffusion of gas molecules across the cuticle membrane of sea spider legs and the role body size plays in the ability of sea spiders to uptake gases. Students construct model sea spider legs of varying diameters and use them to investigate the relationship between surface area-to-volume ratios and diffusion.
Ice that forms in the polar oceans is an important driver behind the global climate. This ice is physically different from frozen precipitation in a number of different ways. In this brief inquiry activity, students make qualitative observations about two types of ice cubes and deduce ice composition based on their observations. This activity may serve as an introduction to
In this investigation, students will measure production of CO2 from surface water and consider the role of surface waters in the global carbon cycle and climate change. They will gather data on using Vernier CO2 sensors. This lesson presents a wonderful opportunity for student-designed experiments.
This is a good lesson to get students thinking about the complexity of the systems involved in providing our society with energy, the consequences of energy use and efficiency. Students are encouraged to explore the data sets on their own, ask their own questions about energy use and present their findings to each other.
Students will explore the concept of albedo and how it relates to melting ice and climate change. This is a hands-on activity where students measure the reflectivity of various surfaces as a model for how light interacts with different parts of the Earth’s surface. This is adapted from lessons created by Jamie Esler and SERC earthlabs.
Learning about feedback mechanisms is an important part of understanding how climate change will play out in the near and long term. Students are also exposed to the idea that scientists create simple models of complex climate systems and that feedback mechanisms play a crucial role in climate modeling.