Tiêu đề 13_Sound (Lec-1).pptx ✅

SOUND SOUN D
SOUND Sound is a form of energy which produces sensation of hearing in our ears. How is SOUND produced? SOUND is produced by a vibrating source. Lets us perform an activity to understand sound
Strike the pan with the stick Touch the pan gently Rope Stick Metal pan What do you observe ? Sound is produced Vibrations in the pan What do you feel ? Do you feel vibrations when the sound stops ? NO Vibrations Sound Activity to show that Vibrations produce sound
When we pluck the strings of a guitar Strings vibrate and produce sound When the strings stop vibrating Sound also stops Sound is produced as long as the object vibrates Example to show that Vibrations produce sound