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View Resource Eddy Currents

This site from the Exploratorium provides a simple demonstration of the interaction between a moving magnet and its induced electromagnetic field. As the magnet is dropped down a metallic tube, it induces eddy currents that oppose its fall. The site contains a materials list, basic procedures for the activity, and an explanation of what happens in terms of the electric and magnetic fields...

View Resource Circles of Magnetism I

This activity demonstrates the magnetic field induced by a current-carrying wire. A group of compasses are arranged around the wire indicating when a magnetic field stronger than the Earth?s field is produced. Materials needed, assembly, and an explanation of the physics that occurs and a description of the right-hand rule are also provided. This activity is part of Exploratorium's Science S...

View Resource Cirlces of Magnetism IV

This activity is concerned with the magnetic field generated by a current-carrying wire. Two current-carrying wires are placed near each other as forces push them apart or pull them together. Materials needed, assembly, an explanation of resluts, and links to related activities from the Exploratorium are also given. This activity is part of Exploratorium's Science Snacks series.

View Resource Electromagnet Lesson

This hands-on classroom activity will help students understand the connections between magnets and electricity generation. The learning cycle planner includes an exploration phase with a hands-on activity and a suggested video. The concept development phase suggests showing the film "Who Killed the Electric Car?" The main part of this learning unit is the electromagnet lesson, which is a two day...

View Resource Curie Point

This site from the Exploratorium provides a demonstration of how heat can destroy magnetism. The site contains a materials list, assembly instructions, and basic procedures for the activity. Also presented is an explanation of what happens in terms of the orientation of the atomic magnets in the metal.

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