This is a blog of the 4th grade class in la Farigola de Vallcarca School in Barcelona. This year we are doing “Aula de Ciències” in English.
In this blog we want to show you the experiments we do in our Science Lab. Science is fun!

dilluns, 26 de març de 2012

A telephone

- Two plastic glasses
- 6 - 8 m. of fishing line
- 2 clips
- a cutter

- Make a hole on the bottom of the plastic glasses.  
- Put one end of the fishing line into the hole.
- Make a knot to a clip. Do the same with the other end.
- Tighten the fishing line and talk to a friend.

The  sound travels better through a solid (fishing line) than the air.

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