This hands-on activity allows students to re-acquaint themselves with magnets, magnetic fields and the concept of polarity.
In this hands-on activity students create a simple electromagnet with wire, a pencil, and a battery. Students will investigate factors that increase the strength of the magnet.
In this hands-on activity, the generator effect will be demonstrated, due to electromagnetic induction when a conductor (extension cord) moves through a magnetic field (in this case, the Earth's magnetic field). Students will note changes in galvanometer readings.