Advanced Environmental and Earth Sciences Teacher Guide

(PS-2979)

Teacher manual for Advanced Environmental and Earth Sciences labs. Has both the printed version and a flash drive with teacher tips, a PDF of teacher version and editable Word student version.

Earth's Magnetic Field

Lab Summary

Use a magnetic field sensor to visualize the magnetic field lines surrounding Earth.

Theory

Use models to visualize the magnetic field lines surrounding Earth. Through this activity, students:

  • Describe the variations in magnetic field strength surrounding Earth
  • Explain that the internal structure and composition of Earth’s core creates Earth’s magnetic field
  • Discuss how Earth’s magnetic field is used by navigators

Method

Students gain experience conducting the following procedures:

  • Building a model compass.
  • Visualizing the magnetic field generated by a bar magnet.
  • Using a bar magnet as a model to understand the Earth’s magnetic field.
  • Measuring the magnetic field of a bar magnet using a magnetic field sensor.

Sensors / Equipment Used:

PASPORT Magnetic Field Sensor

(PS-2112)

Provides magnetic field measurement in a very compact package. For use with PASPORT Interfaces.

Materials Used:

Degree wheel template 
Magnetic field demonstrator plate, 2-D - 4
Map of Earth template 
Bar magnet 
Clear plastic cup 
Pin 
Sewing needle 
Small cork (or a bit of polystyrene) 
Water - 500 mL

The Associated Bundle:

Advanced Environmental and Earth Science Standard Sensor Bundle

(PS-2916A)

Standard bundle for Advanced Environmental and Earth Sciences Teacher Guide,

Interface Required

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