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, thread, cork, burner, textbook Worm up activity · Ask the students: Do you know the three states of matter? Name them. (Expected response: Solid, liquid and gases) ·