There is so much media hype and public misunderstanding regarding the issue of climate change that advanced students need to be equipped to sort through the information available, find data from appropriately moderated scientific data bases, and learn to support their views with good scientific evidence rather than emotion. This lesson provides the outline for giving students some preliminary
How can the ocean be colder than 0 degrees C, the temperature at which water freezes? As it turns out, the concentration of the particles (in this case, the ions from the salt) in ocean water lowers the temperature at which the saltwater will freeze. Students will learn how ocean water freezes at a lower temperature than freshwater by
The following presentation was given by Dr. Patricia Yager at the 2012 Arctic Ocean Ecosystem Workshop in Barrow, Alaska. The presentation outlines Dr. Yager's work in biological and chemical oceanography, and focuses on the feedbacks between climate change and marine ecosystems at different locations around the world.
Even in Antarctica ice will melt. As the sun stays higher and higher in the sky as summer progresses, the warm sun causes the ice to melt. The questions that we are going to ask are: 1) Does clean ice (no sediment) or dirty ice (has sediment mixed in it) melt faster? and 2) Would the ice melt if
We know that we have lots of microorganisms growing where we live, but can microorganisms like bacteria also live in the harsh, cold, dry climate of Antarctica? Part of our research project in Antarctica is looking at the microorganisms that live in the Taylor Glacier. We are taking dirty ice (ice with lots of dirt/sediment in it) and
For this experiment, we are going to melt dirty ice (ice with lots of sediment/dirt in it) and clean ice (ice without sediment) from the Taylor Glacier. After we melt the ice, we are going to test the melt water for pH and conductivity, and then determine how much salt is actually in our ice samples. There are
This activity was adapted from a TEA activity authored by:
* Sandra Kolb, Education Consultant, Poulsbo, Washington
* Kolene Krysl, Westside Community Schools, Omaha, Nebraska
* Larry Rose, Pleasanton Middle School, Pleasanton, California
* Wendy Slijk, La Costa Canyon High School, San Diego County, California
The original activity can be found at: http://tea.armadaproject.org/activity/kolb/tobesaltyseaiceornottobesaltyseaice_main.html
This is presentation provides an overview about sea ice in Antarctica as presented by Dr. Patricia Yager. She has slides about the daylight and seasons and related sea ice concentrations. She also has several slides about sea ice as a habitat and about the types of organisms associated with the sea ice. The main part of this presentation focuses on