YR 4 Science - Cup Phones
In science, year 4 are looking at sound.
We made cup phones to observe how sounds travel better and further through solids, rather than gases. Our voices didn’t carry very far when trying to talk to our partners in a normal voice, because of the way particles in a gas are arranged. However, when talking through the cup phones, the particles in the solid cups and string meant that the vibrations carrying the sound could travel much further!