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.
This 1 hour webinar celebrates Antarctica Day 2015 with PolarTREC teacher Michelle Brown and the Human Impacts in Antarctica 2015 expedition. Michelle and her team are on the ice, at McMurdo Station, sharing their research project with the webinar audience.