Assessment

What is sound?

What is in the middle of the coiled wire?

What goes through the coiled wire in order for it to move?

How many coiled magnets are needed to make one speaker work?

What does the coil become when the current is put through?

Speaker create vibrations within the air

The magnet moves up and down within the speaker

Current put through the wires allows for the coil to vibrate along the magnet

High voltages of electric are needed to power a speaker

The smaller amount of current put through the wire, the louder the speaker gets