Strange Sounds!

Today in class we did two experiemnts exploring vibrations and sound. One was 'feeling' sound. We blew up balloons and held them next to our friends' ear. When we spoke through the balloon the sound was louder and really clear.
For the next experiment we put clingfilm over a plastic box and pulled the clingfilm really tight. Then we put uncooked rice on the clingfilm. After that we placed the plastic next to the speaker of a music stereo. When we played the music, the vibrations made the rice hop and dance - the rice can dance better than most of the lads in my class!!

By J-Dizzle D-Money