Describe an activity to show that sound is produced by vibration of materials
Answers
Take a metallic with AB and stretch it titely between two nails fix on the table top. When we pluck the wire a sound is heated. If a V shape paper rider(R) is placed near the centre of the wire,it start vibrating and in case rider is at the centre of the wire it flies off. This prove that sound is produce due to the vibration of wire.
Answer:
Tuning Fork
Explanation:
A fork consists of two tines and a handle. When it is hit with rubber hammer, the two tines starts vibrating. The back and forth motion of tines produces disturbances in the surrounding air molecules. As the tines extend outward from their original position, they compress surrounding air molecules which results in the creation of high-pressure region close to the tine. When the tine moves inwards, it produces a low pressure region near the tine. With more vibrations of tine, an alternating pattern of high and low pressure regions are created. These pressure difference regions help in propagation of sound waves from one location to another.