Making a Circuit

Miss Pirie set out some equipment for us to use.  We had to try and light a bulb using a battery and some wires.  We found out that for the bulb to light, there has to be a complete circuit with no breaks in it.  Once we had figured out how to light the bulb we experimented with buzzers, motors and switches.

 

We then completed some challenges and discovered what happens when you change things in the circuit.  What do you think happens when...

 

There's a knot in the wires?

You have longer wires?

You use three batteries?