Lesson Plan of Propagation of Sound General Science Grade IV
Lesson Plan of Propagation of Sound General Science Grade IV Students’ Learning Outcomes · Demonstrate that sound can travel through solids, liquids and gases but can’t travel through vacuum. Information for Teachers · A sounding body produces vibrations in the air around it. · The sound we hear is carried by the vibrating air. · If there is no air in surroundings of a vibrating object, the sound can’t be heard, e.g. in outer space or in vacuum. · Sound vibrations can also travel through solids and liquids, e.g. metal and water. Material / Resources Table, alarm clock, paper bag, plastic container, metal can, wooden block, plastic bag, water tube, two steel spoons, round bottom flask, bunch of keys, threa...