Featured in PASCO’s Physics through Inquiry Teacher Guide

Physics through Inquiry Teacher Guide

(PS-2873C)

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

Radiation

Lab Summary

Use a Geiger-Müller tube to measure radiation intensity and to discover how radioactive particles react with various materials.

Theory

Students gain a new understanding of how to handle radioactive sources, how to measure radiation intensity, and how radioactive particles react with various materials. Students will:

  • Understand the relationship between the distance from a radioactive source and the measured activity of the source.
  • Observe the penetrating ability of three common types of nuclear radiation.
  • Investigate the ability of different materials to absorb energy associated with nuclear radiation.

Method

Students gain experience conducting the following procedures:

  • Using a Geiger-Müller tube to measure the activity of different radiation sources.
  • Measuring the change in counts for a given time interval as a function of distance from the source
  • Measur.ing the effectiveness of different types of shielding for different types of radioactive sources.

Sensors / Equipment Used:

G-M Tube/Power Supply

(SN-7927A)

A Geiger-Muller probe that senses alpha, beta and gamma radiation.

Materials Used:

Digital adapter

Radioactive sources (alpha, beta, gamma) ~ 3

Three-finger clamp

Meter stick

Rod stand

Shielding materials (paper, plastic, lead) 

The Associated Bundle:

Interface Required

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