Make Your Own Ear Trumpet Steps:
Tools: a large cardboard, transparent tape, scissors
and a radio.
1 Roll the cardboard into a cone and fix it with the tape.
2 Cut out a handle and attach it to the cone (this step is optional).
3
Turn on the radio and turn the volume down to a low level. Place the tip of the cone close to your ear, let the other end of the cone face the radio and listen carefully.
4 Notice how different the sounds are with and without the cone.
Caution
the Don’t place ne o c e th tip of r. a e r u o y into se lo c it Just place of e c n a to the entr r. a e r u yo SAS – SC No. 77
Conclusion The visible part of the ear is called the auricle and is used to gather sounds. The auricle can only collect a small amount of sound but the cone can enlarge the auricle so that more sounds can be collected. The sound becomes more concentrated when it passes through the cone and reaches the auricle. As a result, the sound is louder and clearer. 22
