Chapter 11 Lesson 4 THE EYE
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1 Chapter 11 Lesson 4 THE EYE
2 Eye Openers Museum of Vision You need a couple blank sheets of paper. Label each side #1 How We See #2 Binocular Vision #3 Optical Illusions #4 Persistence of Vision
3 On Packet #1 How we See
4 How the Eye Forms an Image As light enters your eye, lenses in your eye focus light to produce an image on the back of your eye. Special cells at the back of the eye convert the image into electrical signals that travel to your brain The Eye and Vision
5 Cornea 11.4 The Eye and Vision Light enters your eye through the cornea, which is a clear area of the sclera the outer layer of the eye. The Eye
6 Parts of the Eye 11.4 The Eye and Vision
7 #2 Binocular Vision Activity 1: The Finger Dance Explain what you saw Why does this happen? Activity 2: hole--ee Hand What did you observe? Why does this happen? Activity 3: Blind Spot What happened? Why did that happen?
8 #3 The Eye-Brain Connection Answer the questions for every optical illusion label # s 1-7 with bullet points. Lets Discuss
9 #4 Persistence of Vision Make a flip Book as instructed Why does a flip book look like it is moving?
10 Materials Needed Today Please take these materials out of your backpack. Pencil Eye Opener s Museum Hot Sync Answer the following in complete sentences. Wednesday 4/2/14 List and describe the function of as many parts of the eye that you can think of. (EX: eye lids, lashes, pupil.etc )
11 Materials Needed Today Please take these materials out of your backpack. Pencil Eye Opener s Museum Hot Sync Answer the following in complete sentences. Thursday 4/3/14 What part about the eye and seeing interests you the most and why? (5 sentences)
12 Materials Needed Today Please take these materials out of your backpack. Pencil Chapter 11 Lesson 4 Workbook Packet. Hot Sync Answer the following in complete sentences. Friday 4/4/14 Please pass your hotsyncs in
13 11.4 The Eye and Vision cornea pupil iris retina pigment
14 The innerworkings of the eye ps3c
15 Iris The pupil is the dark opening into the interior of your eye The Eye and Vision The pupil is surrounded by the iris the colored part of your eye behind the cornea.
16 Lens The lens of your eye is convex and flexible The Eye and Vision The ciliary muscles attached to the lens change its shape depending on the distance of the object being looked at.
17 Retina The retina is a sheet of light-sensitive cells in the back of the eye The Eye and Vision Rod cells respond to dim light and cone cells enable you to see colors.
18 Seeing Color The response of cone cells to different wavelengths of light cause you to see objects as having color. Three types of cone cells: 11.4 The Eye and Vision One responds to the wavelengths of red and yellow light, causing you to see red. One responds to yellow and green light, causing you to see green. One responds to blue and violet light, causing you to see blue.
19 Pigment Colors 11.4 The Eye and Vision A pigment is a material used to change the color of other materials or objects. The color of a pigment depends on the wavelengths of the light it reflects.
20 11.4 The Eye and Vision Pigment Colors (cont.) Reflecting Light
21 Color Printing The pictures in magazines are formed by many tiny dots of color The Eye and Vision Usually, the primary colors of pigments, as well as black, are used.
22 Common Vision Problems 11.4 The Eye and Vision Color deficiency: either lack red or green cones, or the cones do not function correctly
23 Common Vision Problems (cont.) Nearsightedness: cannot see faraway objects clearly 11.4 The Eye and Vision
24 Common Vision Problems (cont.) Farsightedness: cannot see nearby objects clearly 11.4 The Eye and Vision How are lenses used to correct vision?
25 11.4 The Eye and Vision 1. A 2. B 3. C 4. D What controls the amount of light that enters your eye? A ciliary muscles B cornea C sclera D iris 0% 0% 0% 0% A B C D
26 11.4 The Eye and Vision 1. A 2. B 3. C 4. D What part of the eye enables you to see colors? A pupil B rod cells C cone cells D optic nerve 0% 0% 0% 0% A B C D
27 11.4 The Eye and Vision 1. A 2. B 3. C 4. D Which describes a nearsighted eye? A it is missing some cone cells or the cones don t function properly B the eyeball is too short for the lens to form a clear image C the rods at the back of the eye do not function properly D the eyeball is too long for the lens to form a clear image A 0% 0% 0% 0% B C D
28 THE EYE!!!
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