Salinity (including Titration)
Students will measure the salinity of a salty or brackish water sample using a hydrometer and thermometer.
Protocols to help in completion of the main protocol
Hydrosphere protocols introduction document.
Students will measure the salinity of saltwater using a salinity titration kit.
Instructions are provided on how to select, describe and map a hydrosphere study site.
Students will first measure water transparency at their undisturbed study site using a transparency tube or Secchi disk.
Students will measure the temperature of water.
Step-by-step instructions for collection data according to the protocols.
Sheets to be filled out during data collection
Activities to help students learn more about the instruments and protocols
Introduction document to the Hydrosphere Investigation Area Learning Activities.
Students will make a 3-dimensional model of a catchment basin to understand how water moves through the basin and explore how water is affected when there are changes in the basin.
Students will model the changes in soil water storage over a year.
In the classroom, students practice using the instruments or kits for protocols, exploring the range of measurements and sources of variation and error.
Students become acquainted with their Hydrosphere Study Site.