Middle School Earth Science Teacher Guide


Features 13 core activities covering the fundamental topics of weather & climate, seismology & topography, soil properties and more.

Soil Salinity

Lab Summary

Use a conductivity sensor to measure the level of conductivity of various water and soil samples.


In this activity, students will:

  • Become familiar with the way salt levels can vary within an ecosystem
  • Measure the conductivity of different soil and water samples
  • Gain skills and confidence in using a scientific measurement tool, the conductivity sensor, as well as the graphing capability of a computer to represent and analyze data


Students gain experience conducting the following procedures:

  • Collecting and labeling soil and water samples gathered from the local ecosystem
  • Setting up the equipment and work area to measure the level of conductivity in different solutions
  • Measuring the conductivity levels of various water and soil samples

Sensors / Equipment Used:

PASPORT Conductivity Sensor


Utilizes platinum probes for greater range and improved accuracy in high & low concentrations.

The Associated Bundle:

Middle School Science Standard Sensor Bundle


This bundle contains the probeware needed to perform all 49 lab activities in the Middle School Science through Inquiry lab manual.

Interface Required

This experiment may require software and an interface for data collection.