Disappearing Wetlands: Explore the relationship between mass, density, and salinity by measuring the mass and volume of four saltwater solutions of increasing strength.
Before the Activity
See the attached teacher document (pdf file) for notes and guidelines for this activity.
Print and copy the attached activity document(pdf files) for your class.
During the Activity
Perform an experiment to explore the relationship between mass, density, and salinity
Measure the salinity of four saltwater solutions of increasing strength using a conductivity sensor connected to a TI CBL 2™
or Vernier LabPro® and a TI-73 Explorer™
Find the density of each solution by measuring its mass and volume
Distribute the activity document to your class
Follow the activity procedures outlined in the student document
After the Activity
Students complete the data analysis section of the activity
Discuss the results of the data analysis with your students