Electrical Conductivity

Electricity! Sparking Interest Today’s lesson was all about electricity. Students were challenged to make a complete circuit to light up a light bulb. Next, they made some shocking conclusions about which materials conduct electricity and which don’t by testing them in their circuit. Finally, they really had to take charge and include a light switch in their circuits. Their simple circuit consisted of a battery, light bulb and wires. They then added in the different insulators and conductors to the closed circuit to see which materials would keep the light on. Students found that metals were good conductors, while paper, wax and rubber were insulators. This is the reason why we have plastic, an insulator, around our electrical cords so we won’t get shocked!

Extend this lesson by building “squishy circuits” out of conductive and insulating dough. Check out: http://courseweb.stthomas.edu/apthomas/SquishyCircuits/howTo.htm

¡Electricidad! Interés chispeante

La lección de hoy fue todo sobre la electricidad. Los estudiantes fueron desafiados a hacer un circuito completo para encender una bombilla. Luego, hicieron algunas conclusiones impactantes sobre qué materiales conducen la electricidad y cuáles no probándolos en su circuito. Finalmente, realmente tuvieron que hacerse cargo e incluir un interruptor de luz en sus circuitos. Su circuito simple consistía en una batería, una bombilla y cables. Luego agregaron los diferentes aisladores y conductores al circuito cerrado para ver qué materiales mantendrían la luz encendida. Los estudiantes encontraron que los metales eran buenos conductores, mientras que el papel, la cera y el caucho eran aislantes. ¡Esta es la razón por la que tenemos plástico, un aislante, alrededor de nuestros cables eléctricos para que no nos sorprendamos!

Amplíe esta lección construyendo “circuitos blandos” de masa conductora y aislante. Echa un vistazo a: http://courseweb.stthomas.edu/apthomas/SquishyCircuits/howTo.htm

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