Educators and Students
An expert explains electricity with three demonstrations. In the first demonstration, a student shows that when he rubs rods with a cloth, the rods become charged with static electricity. The rods attract or repel each other as a result of the electrical force. The expert and the student discuss static electricity in terms of electrons moving from the cloth to the rod. In the second demonstration, the student then explains current electricity by rubbing his feet on carpet and then touching metal. A final demonstration shows that electrical current flowing through a wire creates a magnetic field.
What Is Electricity?
Duration: 4 minutes 09 seconds
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This video clip is part of the The Case of the Technical Knockout DVD
that may be ordered from the Central Operation of Resources for Educators, or CORE →
Other video learning clips in this series:
Navigational Uses for Global Positioning Systems, or GPS
Early Navigation, How Was It Done?
How Do Global Positioning Systems, or GPS, Work?
Radar, Radio Waves and Light
Experimenting With Electromagnets
Earth's Role as an Electromagnet and the Creation of Auroras
NASA's Research on the Sun
All About Solar Flares
What Are Geomagnetic Storms?