Featured in PASCO’s Physics through Inquiry Teacher Guide

Physics through Inquiry Teacher Guide


Features over 30 inquiry based labs covering the core topic areas of mechanics, electricity and magnetism, optics, thermodynamics and more.

Absolute Zero

Lab Summary

Use an absolute pressure sensor and a temperature sensor to experimentally determine a numerical value for absolute zero in degrees Celsius.


Students experimentally determine a numerical value for absolute zero in °C.By doing this, they:

  • Develop an understanding of the direct relationship between temperature and pressure of an enclosed gas with constant volume.
  • Apply statistical methods to experimentally gathered data in order to extrapolate values that are not measurable.
  • Learn how an ideal gas can be used as a thermometer.


Sensors / Equipment Used:

PASPORT Absolute Pressure/Temperature Sensor


Designed for ideal gas law allowing both absolute pressure and temperature measurement. For use with PASPORT Interfaces.

Materials Used:

Barbed quick-release connector

Barbed tubing-to-rubber stopper connector

Hot Plate

Rod Stand

Three-finger clamp

Tubing ~ 15 cm

Utility clamp

Beaker, 600 mL

Disposable pipet


Oven Mitt

Rubber stopper, 1-hole #2

Tape ~ 6 cm

Test tube, 20 mm X 150 mm

The Associated Bundle:

Physics Standard Sensor Bundle


Contains the probeware needed to perform all 37 lab activities in the Physics through Inquiry lab manual.

Interface Required

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