[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.

Physicists sometimes study matter under extreme conditions. For example, think of the emptiness of interstellar space vs. the unimaginable crush of pressure at the center of a neutron star, or an object dipped in liquid nitrogen vs. the...

Create a magnetic field that is stronger than Earth so a compass needle will orient itself to the new field in this activity.

This is a sample lesson on electromagnetism. It includes animated diagrams, interactive exercises, an audio option for reading the text, and comprehension questions throughout where students can type their answers or pick from...

An activity exploring eddy currents by having a magnet fall through a metallic and nonmetallic tube.

From ABC News in Science, this article, "Sun's magnetic field twisted and tangled," discusses images taken of "plumes of gas" which are rising from the sun's corona.

See how electricity and magnetism interact with this activity. Activity has students creating a current by swinging a copper coil through a magnetic field. The copper coil will start a second coil swinging as well.

[Free Registration/Login may be required to access all resource tools.] Discover how scientists learn about Earth's interior using seismic waves, meteorites, density, and the magnetic field. Additional resources are available for download.

Provides a short article, with embedded links, about magnetic reversals and how they might occur.

Create a simple device to see how a force is exerted on a current by a magnetic field. This activity shows how an electric motor can be made with this force.

Scientists use image furnaces to grow crystals at very high temperatures. A built-in camera allows them to observe in action a delicate process that is equal parts art and science.

An electromagnetic induction model that simulates an electric generator made from a conducting loop rotating in a uniform magnetic field and connected to an ammeter.

Luigi Galvani was a pioneer in the field of electrophysiology, the branch of science concerned with electrical phenomena in the body. His experiments with dissected frogs and electrical charges led him to suggest the existence of a...

The main figure behind the first transatlantic telegraph knew very little about the science or engineering behind it, but was convinced that with it a fortune could be made. Read about these findings here.

Provides a short explanation of the similarities between magnetism and electricity, the properties of their fields, and the effect they each have on a charged particle.

Explains what a magnetic compass is and how it works.

Site provides the article, "Burst Behind the Sun Reveals Magnetic Charm of Distant Explosion," that details on a gamma-ray burst that occurred on December 6, 2002. Provides graphics and links to learn more about gamma-ray bursts.

This site explores the history of power lines and cancer associations, as well as dispelling the myth. The science is explored by citing known facts, studies and experts in the field.

Learn how electric charges work and about Coulomb's Law, which is used to calculate the strength of an electric force.

Resource explores what a pulsar is, as well as what is currently known about this phenomenon. Content includes a focus on x-ray observations of pulsars, and gamma-ray pulsars.