Science Quiz for Grade 3

In our eyes, there is a colored part that controls the amount of light that enters the eyes. What is it?

• cornea

• iris

• lens

In our ears, there is a snail-shaped tube that is filled with liquid. This tube also contains the nerves that send message to the brain. What is it?

• cochlea

• ear drum

• pinna

These are tiny sensory organs on the tongue that tell if the food is sweet, sour, salty or bitter. What is it?

• nerves

• papillae

• taste buds

Lara scrubs her skin while taking a bath. She noticed that dead skin cells were removed. What layer of the skin contains dead skin cells?

• dermis

• epidermis

• sweat glands

If a person is far or near sighted, the lens of the eyes cannot focus the light properly. What do the lens do to the light that enters our eyes?

• Allows light to enter the eye.

• Controls the amount of light that enters the eye.

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

After cleaning a dusty room. Emily cleaned her nose and removed dust from it. What part of the nose traps the dust that enters?

• cilia

• nostrils

• olfactory bulb

After a rigorous exercise, we sweat. What is the function of the sweat glands in our skin?

• They clean our blood vessels.

• They produce oils that prevent skin from drying.

• They remove excess water and salt to regulate body temperature.

The pinna is a funnel liked shaped of the ear. Is it important? Why?

• Yes, because it makes us beautiful.

• Yes, because it sends sound waves to the inner ear.

• Yes, because it collects sounds from all directions.

Where do cows, horses, sheep, chicken, pigs, and ducks live?

• farm

• house

• zoo

Which of the following animals can live both on land and in water?

• bird

• fish

• turtle