Second Quarter Test for Science 3

What sense organs do you use when you read?

• eyes

• nose

• skin

What do you call the sense organs that we use in hearing?

• ear

• brain

• tongue

Which part of the tongue tells us if the food we eat is sweet, sour, salty or bitter?

• nerves

• papillae

• taste buds

What layer of the skin contains dead skin cells?

• dermis

• epidermis

• sweat glands

What is the function of the optic nerve?

• It sends messages to the brain so that we can tell what we see.

• It sends messages to the brain so that we can tell what we smell.

• It sends messages to the brain so that we can tell the sounds we hear.

What does the lens of the eyes do to the light that enters to our eyes?

• It allows light to enter the eye.

• It controls the amount of light that enters the eye.

• It bends the light coming into the eye and focuses it upon the retina.

The hammer, anvil and the stirrup are the three tiny bones found in our ears. How do they send sound to the inner ear?

• They move slowly so that they can send the sound to the inner ear.

• They move one at a time then the stirrup will send the sound to the inner ear.

• They rapidly move one after the other and then send the sound to the inner ear.

Cilia are found in the nostrils. Why are they there?

• to cool the air getting into the nostril

• to keep the air moist as it enters the nostril

• to strain dust particles as they enter the nostril

What is the function of the sweat glands in our skin?

• They clean our blood vessels.

• They produce oils that prevent the skin from drying.

• They remove excess water and salt from the blood through the sweat.

The pinnae are shaped like shells and are attached to the sides of the head. Why are they important?

• because they make us beautiful

• because they send sound waves to the inner ear

• because they collect sounds from all directions and direct them into the ear canal