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: 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.
CK-12 Foundation
Ck 12: Fifth Grade Science: Physical Science: Earth as a Magnet
[Free Registration/Login may be required to access all resource tools.] Looks at the Earth as a magnet and how Earth's magnetism benefits living things.
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]
University Corporation for Atmospheric Research
Ucar: The Sun Earth Connection: Planet Magnet
Hands-on activities help students develop an understanding of Earth's magnetic field. Students use iron filings to explore the magnetic field around a magnet, record their observations, then apply their experience with the magnet to...
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.
Georgia State University
Georgia State University: Hyper Physics: Magnetic Field of the Earth
This site is a description of the earth's magnetic field, including a section on the "Dynamo effect," a proposed explanation for the origin of the earth's magnetic field.
NASA
Nasa: Image Science Center: Ask the Space Scientist Earth
Site from NASA contains a collection of 91 questions pertaining to the Earth's atmosphere, magnetic field, ionosphere, rotation and origin of life.
National Earth Science Teachers Association
Windows to the Universe: Magnetic Field Reversals
Provides a short article, with embedded links, about magnetic reversals and how they might occur.
Physics4kids
Physics4 Kids: Electricity and Magnetism: Magnetic Fields
Explains magnetic fields, how they differ from electric fields, and attraction and repulsion.
PBS
Nova: See a Reversal
The earth's magnetic field is due for a reversal. Find out what causes the magnetic field and view an animated model that shows it reversing.
Science Struck
Science Struck: How Does a Compass Work?
Explains what a magnetic compass is and how it works.
Curated OER
Physics4 kids.com: Earth's Magnetic Fields
Illustration of Earth's magnetic field lines.