How is the shape of outer ear useful?

The shape of the outer ear is useful for collecting sound waves and directing them into the ear canal. The ear canal then amplifies the sound waves before they reach the eardrum.

The outer ear is made up of two main parts: the pinna and the ear canal. The pinna is the visible part of the ear, and it is made up of cartilage. The ear canal is a tube that leads from the pinna to the eardrum.

The pinna is shaped like a cup, and it helps to collect sound waves from all directions. The shape of the pinna also helps to amplify sound waves, making them louder before they reach the eardrum.

The ear canal is a tube that is about 2.5 cm long. It is lined with wax glands that produce earwax. Earwax helps to protect the ear canal from infection and damage.

The outer ear is an important part of the hearing process. It helps to collect sound waves and direct them into the ear canal, where they are amplified before reaching the eardrum.