Middle School Earth Science Teacher Guide


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

Soil Characteristics

Lab Summary

Use a pH sensor to investigate the pH of different soil samples.


In this activity, students learn about soil pH levels while they:

  • Compare the acidity or alkalinity of each soil sample to a typical pH range for healthy plants
  • Determine the effects of adding substances that adjust pH levels


Students gain experience conducting the following procedures:

  • Collecting soil samples and prepare them for measuring the soil pH
  • Using a pH sensor to investigate the pH of soil samples that they provide
  • Relating the pH of the soil to its fitness for growing various crops
  • Describing the type of soil particular crops might thrive in, and suggesting methods to alter the soil to improve its usefulness for growing agricultural crops

Sensors / Equipment Used:

PASPORT Chemistry Sensor


Allows students to measure Temperature, pH/ISE/ORP, Absolute Pressure & Voltage in one sensor. For use with PASPORT Interfaces.

Your Bundle Options:

Option 1:

Middle School Earth Science Starter Bundle


The equipment bundle for teaching 11 of the 13 Middle School Earth Science Teacher Guide's labs.

Option 2:

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.