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
Have you ever wondered how polar scientists do it? How do they really know if the planet is losing vast quantities of ice anyway? You can use pictures from satellites to monitor the surface from year to year, but the vast majority of ice is hidden from view, buried beneath the surface in some of the most inhospitable and
In mid-April 2012, five teachers from Denmark, Greenland, and the United States, were given the experience of a lifetime. The teachers lived, worked, and flew alongside airborne polar scientists in Greenland, and saw firsthand how remote data are collected on NASA’s Operation IceBridge. In the process, the experience provided the educators with better tools to teach students about science. Read
Arizona Daily Sun article about Jillian Worssam's PolarTREC experience on the USCGC Healy in the Bering Sea. Article created from journal excerpts, and was published on 3 August 2008.