CK-12 Foundation
Ck 12: Physical Science: Using Earth's Magnetic Field
[Free Registration/Login may be required to access all resource tools.] The Earth's magnetic field and how it protects life on Earth, and how it is used for navigation.
CK-12 Foundation
Ck 12: Earth Science: Earth's Magnetic Field
[Free Registration/Login may be required to access all resource tools.] Examines Earth's magnetic field.
CK-12 Foundation
Ck 12: Physical Science: Magnetic Field Reversal
[Free Registration/Login may be required to access all resource tools.] Discusses what a magnetic field reversal is and the evidence that this has happened with the Earth.
Massachusetts Institute of Technology
Mit: Open Course Ware: Forces: Current Carrying Wires in Magnetic Fields
Learners investigate current-carrying wires in magnetic fields. Some topics explored in the activities are forces, magnetic dipoles, and circuits. The resource consists of video clips, lecture notes, exam questions, java applets, and...
Massachusetts Institute of Technology
Mit: Open Course Ware: Courses: Physics Ii: Electricity and Magnetism
College-level physics course highlighting electricity and magnetism. This course is divided into several modules including electric fields, magnetic fields, electromagnetic forces, conductors and dielectrics, electromagnetic waves, and...
Science Education Resource Center at Carleton College
Serc: Detect a Magnet's Field
In this physics lab students discover the invisible magnetic field where the magnet can exert its power to push or pull.
National High Magnetic Field Laboratory
Magnet Academy: Drawing Field Lines
A well illustrated activity where students investigate and draw the magnetic field lines created with a bar magnet and a compass.
CK-12 Foundation
Ck 12: Earth Science: Earth's Shape and Magnetic Field Study Guide
This comprehensive study guide covers the main terms and concepts needed for an earth science unit on the earth's shape and magnetic field. Review questions are included at the bottom of the study guide.
CK-12 Foundation
Ck 12: Earth Science: Earth's Magnetic Field
[Free Registration/Login may be required to access all resource tools.] Examines Earth's magnetic field.
Learn Engineering
Learn Engineering: Understanding Rotating Magnetic Field & Synchronous Speed
Get information about rotating magnetic fields and how electric machines use them for their operation. Discusses synchronous speed and number of poles on an electrical machine. The accompanying article discusses the topics found in the...
TeachEngineering
Teach Engineering: Both Fields at Once?!
This lesson discusses the result of a charge being subject to both electric and magnetic fields at the same time. It covers the Hall effect, velocity selector, and the charge to mass ratio. Given several sample problems, students learn...
Physics4kids
Physics4kids: Electricity and Magnetism: Magnets
Here is the site to help you learn all about magnetism and magnets! Find out what a magnet is and how it works. Click for additional details on charges, conductors, magnetic fields, currents, resistance as well as the Laws of Faraday and...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Ph Et: Interactive Simulation: Magnets and Electromagnets
Move a bar magnet or an electromagnet around to see how the magnetic fields change. Requires Java.
CK-12 Foundation
Ck 12: Physics Simulation: Field Lines
[Free Registration/Login Required] Understand the size and shape of the Earth's magnetic fields, explore the magnetic fields of other planets using this interactive simulation. A PDF worksheet and a video tutorial are also available. [2:35]
National High Magnetic Field Laboratory
Magnet Academy: Wilhelm Weber
Find out more about German physicist Wilhelm Weber, who developed and enhanced a variety of devices for sensitively detecting and measuring magnetic fields and electrical currents.
National High Magnetic Field Laboratory
Magnet Academy: Hall Effect
When a magnetic field is applied perpendicular to the flow of current, the field causes resistance in the current. This is the Lorentz force at work, and can be observed well in the Hall effect. (Java tutorial)
Khan Academy
Khan Academy: Measure the Earth's Field!
You can use a bar magnet and a compass to get a rough idea of the strength of Earth's magnetic field. Read this article to find out how!
National High Magnetic Field Laboratory
Magnet Academy: Lorentz Force
Learn about the Lorentz force with the help of this tutorial, in which a wire fashioned into a pendulum moves inside a magnetic field. (Java tutorial)
National High Magnetic Field Laboratory
Magnet Academy: Seeing Magnetic Field Lines
Compasses and special metal filings help you "see" the invisible force of magnetic fields. [2:25]
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Magnetic Multipole Field Model
A simulation which shows the field of a magnetic dipole or quadrupole using compass needles indicating direction and relative field strength. Change the angular orientation of the dipole, and a movable compass shows the magnetic field...
CK-12 Foundation
Ck 12: Magnetic Force on Moving Electric Charges
[Free Registration/Login may be required to access all resource tools.] This lesson examines how moving electric charges are affected when inside a magnetic field. Students are shown how to calculate the force on a single moving electric...
Khan Academy
Khan Academy: Experiment: What's the Shape of a Magnetic Field?
See drawing from Hans Christian Orsted's lab notebook showing an experiment in which an electric charge passing through a wire seemed to create a magnetic field!
University Corporation for Atmospheric Research
Ucar: Planet Magnet
Students use iron filings to explore the magnetic field around a magnet and record their observations then apply their experience with the magnet to understand the magnetic field around Earth.
PBS
Pbs: Magnetic Storm
The purpose, life, and hazards of the Earth's magnetic field are discussed as they relate to magnetic storms. This includes their impact on animals, auroras, and even compasses. Interactive features are also included in this...