Energy And Sound

This term our WALT is all about sound and energy. we have been learning what sound is and how it travels, the conservation of energy and what it is and the characteristics of sound. We have looked at lots of videos and that really helped me understand more about energy and sound. We did an experiment about the high pitch and the low pitch of a stereo, We got up to 20(Hz) and no one could hear it and we also had to guess witch pitch Mr. Marquand had truned up or down. Looking at videos and doing experiments has really helped me to understand all about sound and how i travels. I had a question, it was can heat change into a diferent form but then i thougght about it and i thought if it cooled down it changed into clod air, but i was wondering if it could change into anything else. I was really proud on how much new things I learnt.