Middle School Life Science Teacher Guide

(PS-3850)

Features 13 core lab activities coverign the fundamental concepts of physiology, ecology, plant systems and more

Air Pressure and the Lungs

Lab Summary

Use an absolute pressure sensor to measure the change in air pressure within a model “chest cavity” while causing the syringe "diaphragm" to change its volume.

Theory

Students investigate how air pressure and changes in air pressure allow us to breathe.
By measuring changes in air pressure in a model human lung, students learn about the mechanics of breathing while they:

Realize that substances have characteristic properties and that the air around us exerts pressure on everything (air pressure)

Realize that unbalanced forces will cause changes in the direction of an object’s motion

Demonstrate the complementary nature of structure and function in the lungs

Method

Students gain experience conducting the following procedures:

  • Setting up the work area and equipment to measure the change in pressure over time in a closed system
  • Building a model of a human lung within the chest cavity from materials provided
  • Increasing the volume of the model "chest cavity" and observing the effect on a balloon "lung"
  • Using the absolute pressure sensor to measure the change in air pressure within the model chest cavity while causing the syringe "diaphragm" to change its volume
  • Using graphing and math skills to interpret and analyze data

Sensors / Equipment Used:

PASPORT Chemistry Sensor

(PS-2170)

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 Life Science Starter Bundle

(PS-2912)

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

Option 2:

Middle School Science Standard Sensor Bundle

(PS-2933A)

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.