We’ve made play dough circuits before. They are super easy and the creative opportunities almost endless, so in the absence of any real snow so far this year thought we’d make a play dough light up snowman!
Selection of LEDs
Batteries for the battery pack.
First we refreshed our memory about circuits, by creating parallel and series circuits and testing the LEDs in both orientations (Remember current can only go through an LED one way – the longer leg needs to go in the play dough connected to the positive end of the battery pack )
The electricity is shared between each component. If one LED breaks the other will still light up.
The current flowing across each component is the same. If one LED breaks the others will not light as the circuit is broken.
Our snowmen are an example of a parallel circuit. How would you make a snowman? What else could you make with play dough, LEDs and a battery pack?
We made a birthday cake a couple of years ago using a plastic cookie cutter to separate two segments of play dough so the current had to go through the LEDs to complete the circuit.
What do you think?
We’d love to see your play dough circuit creations, if you share on twitter, facebook or instagram don’t forget to tag us @ScienceSparks.