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
PolarTREC alumni Alex Eilers created this mini-exhibit about Antarctica for the Pink Palace Museum in Memphis, Tennessee. The exhibit highlights a variety of topics as well as Ms. Eilers personal experiences in Antarctica. Topics explored include: dressing for the cold Antarctic climate, research on the Weddell seal, the history of human exploration in Antarctica, and extreme facts about the coldest
PolarTREC teacher Alex Eilers used this resource to prepare for her expedition to student Weddell Seals in Antarctica. The purpose of this new web portal is to make available to educators, students, parents, and the general public information, resources, multimedia, and classroom materials based on Antarctica Weddell seal ecology research by the Montana State University Weddell seal research project.
This article describes the work of a team of scientists using the latest in satellite tag technology to track the movements of the Weddell seal over the Antarctic winter. The project hopes to learn more about the animals as well as the ocean environment in which they swim.
Excellent interview and accompanying video about studies of Weddell seals in Antarctic. UC Santa Cruz marine biologist Dan Costa travels to Antarctica to study the winter foraging ecology of Weddell seals through the use of sophisticated satellite tags and physical examinations. Video footage and an interview with participants has been included here.