Today (4/24/12) we went to Mrs. Burkharts’ science lab. At the lab, my class (4th grade) was trying to conduct electricity with many different objects. Some objects worked, some did not. The objects we used were straws, nails, glass rods, paper clips, diode rods, rubber erasers, some copper strips, and some wooden sticks. The project was very interesting because I didn’t know what would happen before I tested the object, but once I test the object, I then knew what the answer was.
What we did with these objects is that we put the object between two alligator clips. Alligator clips are clips that conduct electricity, but not only that, they also complete a circuit. A circuit is a device that connects to the place you want the electricity to go, and then it comes back to where it started. That is a complete circuit.
This is a circuit that I found at a great website.
When we were done with that activity, we went to this glass ball that had electricity and gas mixed together to make some bolts of light in the ball. When I touched the glass ball with my finger, one of the bolts of light followed my hand. Did you know that humans conduct electricity? Not just because there is iron in our blood, because there is salt water in our bodies. Salt water also conducts electricity, but not as well as medal. I know that it might be hard to believe, but it’s true.
I hope you enjoyed!
I got these images at a great website.