SPE 730 How We Hear

Air and water are examples of (in relation to sound and hearing)

• chemical elements

• mediums for sound waves

• counterparts

Sound occurs when a force initiates vibrations into the air causing a sound ____to travel through a medium like air or water

The malleus, incus and stapes are part of

• The inner ear

• the outer ear

• the auditory center

• the middle ear

The eardrum is also known as the

• vibration station

• the inner ear

• the tympanic membrane

The _______ separates the outer and middle ear

The location and shape of the three bones, or ossicles, of the middle ear ______ the strength of the mechanical energy.

• increases

• decreases

• nullifies

What part of the ear receives sound waves?

• outer ear/ pinna

• The earlobe

• The auditory center

• The eardrum

The ______ ___ converts sound waves into mechanical vibrations.

Give a brief description of how we hear sound.