Sound - Waves, frequencies and Hz
Fact sheets (posters)
Decoration for classroom
Hearing and Sound
Tuning fork experiment.
Sound 11-14
Describing Sound Info
PAge 4 Source, Medium, Detector
Sounds moving through medium. Why sound doesn't move through vaccum?
Nuffield Science Year 9
Page 103 - Text book - how does sound travel.
Bell jar and vaccum. Particles, disperse.
Travel through medium - Student Actvity sheet, Activity G5. Cup and string and questions.