3Q Childern sometimes play with a h... [FREE SOLUTION]

Chapter 12: 3Q (page 328)

Childern sometimes play with a homemade 鈥渢elephone鈥� by attaching a string to the bottoms of two paper cups. When the string is stretched and a child speaks into one cup, the sound can be heard at the outer cup, the sound can be heard at the other cup (Fig 12-29). Explain clearly how the sound wave travels from one cup to the other.
FIGURE 12鈥�29 Question 3.

Short Answer

Expert verified

The wave travels down the string and the reciver鈥檚 cup to vibrate due to energy. The vibrating surface moves the air, which forms the sound wave from the bottom of the cup and travel into another cup.

At the end, the sound wave are going in the reciver鈥檚 ear and the reciver will hear the sound.

Step by step solution

Describe the arrangement made by two cups to transmit sound

The cups attached using a string create a sound wave and make the cup vibrate. The string is tightly attached to both the cups, the sound is transmitted in the form of longitudinal waves.

Write the process of wave transmission

When a child is speaking from one end, the sound wave travels down the string, and the energy causes the bottom of the receiver's cup to vibrate. The vibrating surface moves the air, which forms the sound wave from the bottom of the cup and travels into another cup.

In the end, the sound wave is going in the receiver's ear, and the receiver will hear the sound.