1: What are your five senses?
a) Seeing, hearing, sleeping, tasting, moving
b) Seeing, hearing, smelling, tasting, touching
c) Seeing, tasting, touching, thinking, smelling
3: How big is your eyeball?
a) The size of a ping pong ball
b) The size of a pea
c) The size of a tennis ball
5: Which of these statements is true?
a) Your pupil can be blue, green, or brown.
b) Your pupil is a tiny, solid, black ball.
c) Your pupil is a tiny, round opening.
7: Which of these statements is false?
a) The lens in your eyeball can be blue, green, or brown.
b) The lens in your eyeball is see-through.
c) Your lens focuses light onto your retina.
9: What are the tiny cells in your retinas called?
a) Cones and cubes
b) Rods and cones
c) Rods and blocks
2: Why can’t you see objects in a totally dark room?
a) There is no light reflecting off the objects.
b) Your eyes can’t see black.
c) Your eyes don’t work in the dark.
4: What is the round, colored part of your eyeball called?
a) The sclera
b) The iris
c) The pupil
6: What does your cornea do?
a) It focuses light on the back of your eyeball.
b) It makes your pupil get bigger or smaller.
c) It captures light and directs it through your pupil.
10: Which of these statements is true?
a) The picture created by your retina is upside-down.
b) The cones in your retinas detect shapes.
c) The rods in your retinas detect colors.
How much do you know about your sense of sight?
Test your knowledge by taking this quiz. All you need to do
is click on an answer for each question. Have fun!
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version of these questions.
11: How many rods does each of your retinas contain?
a) About 7,000
b) About 7 million
c) About 120 million
13: What happens to your lenses when you look at
something near to you?
a) They get thicker.
b) They get thinner.
c) Nothing happens.
14: What happens to your lenses when you look at
something far away?
a) They get thicker.
b) They get thinner.
c) Nothing happens.
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12: How does the picture created by your retina
reach your brain?
a) It travels along muscles.
b) It travels along your optic nerve.
c) It travels through your lens.
15: What is the white part of your eyeball called?
a) The contact lense
b) The optic nerve
c) The sclera
16: Which of these statements is true?
a) Each eyeball has six tiny muscles that make it move.
b) Your retinas move your eyeballs from side to side.
c) Your lenses change shape to make your eyeballs move.