This afternoon we were experimenting with the transmission of sound. We have learnt that sound is caused by vibrations moving the  materials around it.

When we tried out our string telephone experiment, there were some variables (things that could be changed) which affected how clearly we could hear.

We learnt about Alexander Graham Bell inventing the telephone in 1876. Ask me what the urgent first words were that were spoken over the telephone. Hopefully everyone can remember, but here is the beginning of the message. “Mr Watson! ………………….! Mr Bell had just spilt battery acid on his trousers!