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
This activity is designed to make a connection between a group of scientists and the students.
Objective
Students will learn that scientists are people too.
Preparation
The teacher will need to contact a group of scientists to make sure they would like to participate in the project and to explain to them the goals of the
The website, Ice Stories, features short interviews and other interesting content live from the polar regions. This weblink has a short video interview of PolarTREC teacher, Craig Beals, while taking part in a PolarTREC expedition with Barry Lefer at Summit, Greenland.
Students use data and pictures of a destroyed wind sensor, to develop a theory of what happened to the station. They then develop a plan to make sure the station is not destroyed again.
Objective
Students will be able to use data to develop a reasonable hypothesis.