Question

Take two balloons. Fill air m one and water in the other. Press the balloon filled with air against your ear as shown in the picture. Rub a finger on the balloon and listen to the sound. Repeat the same activity with the balloon filled with water. 

Through which balloon do we hear a clearer sound?

Answer 1

• We hear a clearer sound through the balloon filled with water.
• This is because sound travels more effectively through liquids than through gases. In the water-filled balloon, the vibrations produced by rubbing the finger are transmitted more clearly through the water to our ear.

Thus, this activity shows that sound can travel through different media, and it travels more clearly through water than through air.