Friday, December 11, 2015

Electricity 2

by Arin, Joshua, and Declan

Today, in fourth grade, we were working on a sort of circuit tester for the project we will be conducting next week.

We made a cool and yet disconnected circuit using all of the materials we used last week. The battery was in a holder with a wire sticking out of each side. One wire was connected to a bulb holder, while the other dangled disconnected.
Another wire was connected to the bulb holder, and that one also hung dangled. So there was not enough electrical current to make the bulb light up. (Oh, right! The bulb was screwed into the bulb holder!) Once you connect the two dangling wires, the bulb list up, because that is a complete electrical circuit. 

The word circuit is an old-fashioned word for ‘go around’, which makes perfect sense. A circuit goes around!

A circuit can be made with not only electrons passing through a wire, but also can be made with water passing through a pipe or hose.

Next week, we will use the dangling wire points to touch them to a surface, and see if it makes the bulb light up. We will be talking about conductors, those surfaces that do make the bulb light up. It does work on the clip of Declan’s watch, like we have tested in preparation. 

“Positive and negative sources are opposites, meaning they each need to be connected or opposed to each other,”
-Arin

NEXT WEEK’S QUOTE WILL BE FROM JOSHUA.


Look at the photo below showing four stages of wiring connection to make the bulb light. Only the bulb in the last picture lights up.





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