№ files_lp_4_process_1_53278
Educational science activity describing the construction of a string telephone and explaining the physical process by which sound vibrations travel through a stretched string and relate to the principles used in telecommunication devices.
Topic: Sound transmission and basic acoustics
Document type: Educational activity description
Subject area: Physics education
Educational level: Elementary to middle school
Activity type: Hands-on experiment
Materials: Paper cups, string, pencil or sewing needle
Main concept: Transmission of sound vibrations through solids
Related technology: Telephones and mobile communication
Historical reference: Telephone patent by Alexander Graham Bell in 1876
Technological context: Landline telephones and modern mobile phones using radio waves
Participants: Two people
Activity setting: Classroom or home science activity
Price: 8 / 10 USD
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