This activity requires construction of a simple salinity tester. Students will create their own calibration scale during this experiment, and look at the change in salinity that would arise if freshwater was suddenly dumped into the ocean. Materials needed for this investigation include a DC mill ampere meter, 2 D-cell batteries and holder, bronze sheeting, #18 solid wire, salt, deionized water, and a stream table or pan apparatus to create a hydrologic model of ice-ocean interaction. Included is a student worksheet to guide interpretation of data. The resource is supported by teacher background information, assessment suggestions, and a scoring rubric. This is Activity 3 of the learning module, Water: Here, There, and Everywhere, part of the lesson series, The Potential Consequences of Climate Variability and Change.


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    Earth Science,Oceanography,oai:nsdl.org:2200/20140407124202399T,Earth and space science:Earth processes:Climate,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-115,Grade 8,Grade 7,Earth system science,Geoscience,Atmospheric science,High School,Vocational/Professional Development Education,Middle School,Earth and space science:Earth structure:Ocean and water,Earth and space science:Earth structure:Cryosphere,NSDL



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