Middle School Earth Science Teacher Guide


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

Investigating Evaporation and Condensation

Lab Summary

Use a temperature sensor to explore temperatures variations in multiple locations in the environment, organize and compare the information in simple tables, and identify relationships the temperature patterns reveal.


In this activity, students use a relative humidity sensor to gain an understanding of the water cycle. Students measure water content in air to develop an understanding of evaporation.

Students investigate and observe how relative humidity changes over cold water, warm water, and ice while:

  • Understanding that water covers the majority of the earth's surface and investigating where most of the water on earth can be found
  • Understanding that water circulates around the earth in what is known as the "water cycle"
  • Investigating evaporation and condensation qualitatively and quantitatively
  • Gaining skills and confidence in using scientific measurement tools, the relative humidity sensor, as well as the graphing capability of a computer to represent and analyze data

Sensors / Equipment Used:

PASPORT 6-in-1 Weather Sensor


Measures barometric pressure, relative altitude, absolute and relative humidity, dew point, and temperature. 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.