Chapter 11 Review

A

Sclera

B

Optic Nerve

C

Retina

What is the retina made out of

Rods and Cones

D

Lens

E

Cornea

F

Iris

G

Aqueous Humor

H

Pupil

I

Vitreous Humor

Define what a lens is with (with 3 details)

A lens is a curved, transparent object (usually glass or plastic) that refracts (bends light) and is either convex or concave.

Draw a Convex Lens with the light path

LIGHT CONVERGES

Draw a Concave Lens with the light path

LIGHT DIVERGES

Farsighted can see ______ But not ___________

Farsighted can see FAR But not NEAR

Farsighted is fixed with a _____________ lens

Farsighted is fixed with a Convex lens

Nearsighted can see ______ But not ___________

Nearsighted can see NEAR But not FAR

Nearsighted is fixed with a _____________ lens

Nearsighted is fixed with a Concave lens

Name at 4 least optical instruments that use lenses

Camera Microscope Telescope Magnifying glass Glasses Binoculars

What is it? Uses mirrors, lenses, light in a tube to see distant object more clearly

Telescope

What is it? Uses a single convex lens and light to magnify the small details of an image

Magnifying glass

What is it? Uses several lenses, tubes, lenses and light to enlarge very small objects

Microscope

Draw an eye with the correct sized Iris and Pupil if it was night-time

Large Pupil, Small Iris

Draw an eye with the correct sized Iris and Pupil if it was day-time

Large Iris, Small Pupil

List the order of eye parts as light enters the eye

Cornea Vitreous Humor Pupil Lens Aqueous Humor Retina (Rods and Cones) Optic Nerve Brain

Rods vs. Cones 1) In a human, are there more rods or cones Rods vs. Cones 1) In a human, are there more rods or cones? 2) How many rod cells? 3) How many cone cells?

Rods vs. Cones 1) more rods 2) Rods -125 million 3) Cones -6 million

Cones help you see ________ Rods help you see _________

Cones help you see COLORS Rods help you see BLACK,WHITE, GRAY

What do you know about dogs vision vs. humans vision?