6th Parts of Eye & Ear

For a person to see clearly, an image must be focused exactly on the ________________.

• pupil
• iris
• cornea
• retina

The _________ controls how much light enters the black hole in the center of the eye.

• cornea
• iris
• pupil
• retina

Which part of the ear is a stretched membrane at the entrance of the middle ear?

• stirrup 
• cochlea
• eardrum
• hammer

The part of the ear that is shaped like a snail shell is the ________________.

•  eustachian tube
•  cochlea 
• eardrum
•  semi-circular canal

 What part of the eye acts like a convex lens?

• pupil
• iris
• cornea
• retina

What happens to the eardrum when sound hits it to allow transmission of sound to the inner ear?

• it vibrates
•  it fills with fluid
•  it ruptures
•  it glows

 In which part of the ear is sound changed into electrical signals for the brain to interpret?

• inner ear
• outer ear
• middle ear
• eardrum

The part of the electromagnetic spectrum that humans can easily see is called _____________.

• visible light
• microwaves
• gamma rays
• x-rays

 Which part of the ear is the first to vibrate as sound enters?

• outer ear
• cochlea
• auditory nerve
• eardrum

Contact lenses __________________________

• change the shape of the cornea
• make light rays converge farther forward
• cannot be used to correct nearsightedness
• work with the cornea and tears to act as a single lens