Question

CHAPTER 6) EAR - THE SOUND MACHINE1.1stretchedballoonRubber band- Plastic cupFA PencilI shoeboxmetal plate1. What does the first experiment demonstrate?2. What do you understand from the second experiment?1.2 Compare the stretched membrane of first experiment to any of our body part tvibrated when sounds are produced. Which is the body part?​

Answer 1

Explanation:

How do you come to know that a ‘period’ is over in your school? You come to know easily that someone is at your door when he knocks or you hear the sound of the doorbell. Most of the time you can make out that someone is approaching you by just hearing the foot steps.