Education Technology

JASON: How Dense is Salt Water?

Published on 06/09/2008

Activity Overview

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

Students will:

  • 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


  • Directions
  • 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