Detail Page

Item Picture
published by the PhET
In this simulation, students explore how a compass works to point to Earth's poles. By moving a virtual compass around a bar magnet, users can predict the direction of the magnetic field for different locations. Now superimpose a planet Earth over the bar magnet and see the surprising results in the orientation of the poles! The simulation can be adapted well for use in middle school. For older students, add the field meter.

Editor's Note: In a unit on magnetism, teachers may wish to introduce a hands-on experiment prior to introducing the simulation. See Related Materials for recommended hands-on magnet labs.

This resource is part of a large collection of simulations developed by the Physics Education Technology project (PhET).

Please note that this resource requires at least version 1.5 of Java.
Subjects Levels Resource Types
Electricity & Magnetism
- Magnetic Fields and Forces
= Interacting Magnets
= Magnetic Fields
- Middle School
- High School
- Lower Undergraduate
- Informal Education
- Instructional Material
= Activity
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- General Publics
- application/java
  • Currently 0.0/5

Want to rate this material?
Login here!

Access Rights:
Free access
This material is released under a GNU General Public License Version 2 license. Additional information is available.
Rights Holder:
PHET and University of Colorado
Earth's magnetic field, bar magnet, compass, magnetic field, magnetism simulation
Record Cloner:
Metadata instance created January 23, 2011 by Caroline Hall
Record Updated:
August 18, 2016 by Lyle Barbato
Last Update
when Cataloged:
September 1, 2010
Other Collections:

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4G. Forces of Nature
  • 9-12: 4G/H7. Electric currents in the earth's interior give the earth an extensive magnetic field, which we detect from the orientation of compass needles.

11. Common Themes

11B. Models
  • 6-8: 11B/M1. Models are often used to think about processes that happen too slowly, too quickly, or on too small a scale to observe directly. They are also used for processes that are too vast, too complex, or too dangerous to study.
  • 6-8: 11B/M4. Simulations are often useful in modeling events and processes.
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
, Version 1.02 (PhET, Boulder, 2008), WWW Document, (
PhET Simulation: Magnet and Compass, , Version 1.02 (PhET, Boulder, 2008), <>.
APA Format
PhET Simulation: Magnet and Compass. (2010, September 1). Retrieved July 19, 2018, from PhET:
Chicago Format
PhET. PhET Simulation: Magnet and Compass. Boulder: PhET, September 1, 2010. (accessed 19 July 2018).
MLA Format
PhET Simulation: Magnet and Compass. Vers. 1.02. Boulder: PhET, 2008. 1 Sep. 2010. 19 July 2018 <>.
BibTeX Export Format
@misc{ Title = {PhET Simulation: Magnet and Compass}, Publisher = {PhET}, Volume = {2018}, Number = {19 July 2018}, Month = {September 1, 2010}, Year = {2008} }
Refer Export Format

%T PhET Simulation: Magnet and Compass
%D September 1, 2010
%C Boulder
%O 1.02
%O application/java

EndNote Export Format

%0 Electronic Source
%D September 1, 2010
%T PhET Simulation: Magnet and Compass
%V 2018
%N 19 July 2018
%7 1.02
%8 September 1, 2010
%9 application/java

Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

This resource is stored in 11 shared folders.

You must login to access shared folders.

PhET Simulation: Magnet and Compass:

Covers the Same Topic As Magnet Man: Cool Experiments with Magnets

A comprehensive set of hands-on lab experiments using permanent magnets and electromagnets, most of which can be adapted easily to the secondary science classroom.

relation by Caroline Hall
Covers the Same Topic As

A closely related simulation to explore how a compass responds to magnetic fields. A bar magnet may be moved about a compass to demonstrate strength-of-field. Remove the bar magnet to see the compass needle point north to the Earth's magnetic pole.

relation by Caroline Hall

Know of another related resource? Login to relate this resource to it.
Save to my folders



Related Materials

Covers the Same Topic As

Magnet Man: Cool Experiments with Magnets

Covers the Same Topic As…

See details...

Similar Materials