chapter menu lesson 1:what is light?what is light? lesson 2:light and matterlight and matter lesson...
TRANSCRIPT
![Page 1: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/1.jpg)
![Page 2: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/2.jpg)
Chapter Menu
Lesson 1: What is light?
Lesson 2: Light and Matter
Lesson 3: Using Lenses
Lesson 4: The Eye and Vision
Click on a hyperlink to view the corresponding lesson.
![Page 3: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/3.jpg)
wavelength
frequency
medium
electromagnetic spectrum
11.1 What is light?
![Page 4: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/4.jpg)
Light Transfers Energy
• Similar to water waves, light waves also carry energy from place to place.
11.1 What is light?
![Page 5: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/5.jpg)
Parts of a Wave
• The distance between any two crests of any two troughs is the wavelength.
11.1 What is light?
![Page 6: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/6.jpg)
Frequency and Wavelength
• The frequency of a wave is the number of wavelengths that pass a given point in one second.
11.1 What is light?
• As the frequency of a wave increases, wavelength decreases.
![Page 7: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/7.jpg)
Electromagnetic Waves
• The substance through which a wave moves is called the medium.
11.1 What is light?
• Light is an electromagnetic wave, which is a type of wave that can travel in empty space as well as in matter.
![Page 8: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/8.jpg)
A Range of Wavelengths
• The electromagnetic spectrum includes all electromagnetic waves.
11.1 What is light?
• It is arranged in order, from those with the longest wavelengths to those with the shortest wavelengths.
• Frequency increases as wavelength decreases, and is arranged in order of increasing frequency.
![Page 9: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/9.jpg)
Visible Light
• The visible light spectrum is the range of electromagnetic waves human eyes can detect.
11.1 What is light?
• Visible light wavelengths are measured in nanometers (nm).
• The wavelengths range from 700 nm to 400 nm.
![Page 10: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/10.jpg)
11.1 What is light?
![Page 11: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/11.jpg)
Lesson 1 Review
What is the amplitude of a wave?
A distance from crest to crest
B distance from crest to trough
C distance from crest to resting position
D wavelength x frequency
11.1 What is light?
![Page 12: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/12.jpg)
Lesson 1 Review
What is a wavelength?
A the distance from crest to trough
B the distance from crest to the rest position
C the distance from crest to crest
D the opposite of frequency
11.1 What is light?
![Page 13: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/13.jpg)
Lesson 1 Review
What is the term for the substance through which a wave moves?
A medium
B substrate
C water
D vacuum
11.1 What is light?
![Page 14: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/14.jpg)
End of Lesson 1
![Page 15: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/15.jpg)
absorption
transmission
scattering
refraction
law of reflection
11.2 Light and Matter
![Page 16: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/16.jpg)
The Interaction of Light and Matter
• All electromagnetic waves, including light, transfer energy from one place to another.
• When light rays hit matter, they can be absorbed, reflected, or pass through the matter.
11.2 Light and Matter
![Page 17: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/17.jpg)
Absorption of Light
• The transfer of energy can cause the temperature of the material to increase.
• Absorption occurs when light rays hit a material, and some of the rays’ energy is transferred to the atoms in the material.
11.2 Light and Matter
![Page 18: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/18.jpg)
Transmission of Light
• Whether the light waves are transmitted or absorbed depends on the wavelength of the light waves.
• Transmission occurs when light waves strike a material and pass through it, such as with glass.
11.2 Light and Matter
![Page 19: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/19.jpg)
Scattering of Light• Scattering occurs when a material
causes light waves traveling in one direction to travel in all directions.
11.2 Light and Matter
![Page 20: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/20.jpg)
Opaque, Transparent, and Translucent Materials
11.2 Light and Matter
• The three candleholders are made of different materials that absorb, transmit, and scatter light in different ways.
![Page 21: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/21.jpg)
The Speed of Light in Different Materials
11.2 Light and Matter
• No object or wave can move faster than the speed of light in empty space.
• When light waves travel in matter, they move more slowly.
![Page 22: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/22.jpg)
Refraction• Refraction occurs when a light ray changes direction
when it moves from one material to another.
11.2 Light and Matter
![Page 23: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/23.jpg)
Refraction and Speed Changes• Light waves change direction—refract—when they
change speed moving from one medium to another.
11.2 Light and Matter
![Page 24: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/24.jpg)
Refraction and Speed Changes (cont.)
![Page 25: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/25.jpg)
The Visible Spectrum• White light is a combination of all light waves in the
visible light spectrum.
11.2 Light and Matter
• Almost any color of light can be made by mixing the three primary colors—red, green, and blue—in different amounts.
![Page 26: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/26.jpg)
The Visible Spectrum (cont.) 11.2 Light and Matter11.2 Light and Matter
![Page 27: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/27.jpg)
Reflection• According to the law of reflection, when a light ray is reflected from
a surface, the angle of incidence equals the angle of reflection.
11.2 Light and Matter
![Page 28: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/28.jpg)
Regular and Diffuse Reflection• Light ray reflected from an uneven surface hits a spot in the surface that is at
a slightly different angle, causing the rays to go in many different directions.
• Diffuse reflection is the reflection of light rays from a rough surface.
11.2 Light and Matter
![Page 29: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/29.jpg)
Regular and Diffuse Reflection (cont.)
• The smooth surface of a mirror reflects parallel light rays so that they remain parallel.
• This is called regular reflection.
11.2 Light and Matter
![Page 30: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/30.jpg)
Reflection and Color• As white light strikes and object, some of the
light is absorbed and some is reflected.
• The reflected light enters your eyes and causes you to see the object.
11.2 Light and Matter
Color
![Page 31: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/31.jpg)
Lesson 2 Review
What is the term for the process of transferring light energy to the molecules in a material?
A transmission
B absorption
C scattering
D refraction
11.2 Light and Matter
![Page 32: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/32.jpg)
Lesson 2 Review
Which of the following does light travel fastest through?
A transparent objects
B empty space
C air
D water
11.2 Light and Matter
![Page 33: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/33.jpg)
Lesson 2 Review
Why does an object appear to be blue?
A it absorbs the blue wavelength
B it scatters the blue wavelength
C it reflects all the other colors except blue
D it absorbs all the wavelengths except blue
11.2 Light and Matter
![Page 34: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/34.jpg)
End of Lesson 2
![Page 35: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/35.jpg)
11.3 Using Lenses
lens
convex lens
focal point
focal length
![Page 36: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/36.jpg)
What is a convex lens?• A lens is a transparent object with at least one curved
side that causes light waves to bend.
• A convex lens is a lens that bulges outward.
11.3 Using Lenses
– Convex lens: parallel light rays are bent so they come together, or converge
– Concave lens: parallel light rays spread apart, or diverge
![Page 37: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/37.jpg)
What is a convex lens? (cont.)
• A concave lens is thinner in the middle than at the edges.
11.3 Using Lenses
![Page 38: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/38.jpg)
Light’s Path Through a Convex Lens• A light ray bends when it slows down moving from air
into the lens.
• The light ray bends again when it speeds up moving from the lens back into the air.
11.3 Using Lenses
![Page 39: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/39.jpg)
Focal Point and Focal Length• The focal point is the point where all of the beams of
light converge.
• In a convex lens, all light rays traveling parallel to the optical axis are bent so that they pass through the focal point.
11.3 Using Lenses
![Page 40: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/40.jpg)
Focal Point and Focal Length (cont.)
• The focal length is the distance from the center of the lens to the focal points.
11.3 Using Lenses
![Page 41: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/41.jpg)
Image Formation by a Convex Lens• The image formed by a convex lens depends on the
position of an object relative to the focal point.
11.3 Using Lenses
![Page 42: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/42.jpg)
Optical Instruments• An optical instrument uses lenses to focus light and
create useful images.
11.3 Using Lenses
• Different optical instruments do this by combining lenses in various ways.
• Types of optical instruments
– Cameras
– Telescopes
– Microscopes
![Page 43: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/43.jpg)
Cameras• A camera is focused by moving various lenses back
and forth until a sharp image is formed.
11.3 Using Lenses
• The image is smaller than the object and is upside down.
• To take a picture, the shutter opens so that light enters the camera, and film or an electronic sensor is exposed.
![Page 44: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/44.jpg)
Cameras (cont.)
• To control the amount of light that reaches the film or light sensor, cameras have a diaphragm or an aperture.
11.3 Using Lenses
![Page 45: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/45.jpg)
Telescopes• As an object gets farther away, less of the light from the
object enters the openings in your eyes.
11.3 Using Lenses
• A telescope is an optical instrument that makes far-away objects seem closer.
• There are two basic types of telescopes—refracting and reflecting.
![Page 46: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/46.jpg)
Refracting Telescopes• The objective lens in a refracting telescope is much
larger than the opening in a human eye.
11.3 Using Lenses
• Much more light from a distant object enters the objective lens than would enter an eye.
![Page 47: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/47.jpg)
Reflecting Telescopes• An image of a distant object is formed inside the telescope tube
when light rays are reflected from the curved surface of a mirror.
11.3 Using Lenses
• The largest telescopes are reflecting telescopes.
![Page 48: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/48.jpg)
Microscopes• The eyepiece lens of a microscope is positioned
so it is closer to the image than one focal length.
11.3 Using Lenses
• This makes the image enlarged by the objective lens even larger.
![Page 49: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/49.jpg)
Lesson 3 Review
Where do all the beams of light passing through a convex lens converge?
A focal point
B optical axis
C two focal lengths from the lens
D in the center of the lens
11.3 Using Lenses
![Page 50: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/50.jpg)
Lesson 3 Review
What happens to light when it moves from air into a convex lens?
A it is reflected
B it is scattered
C it slows down
D it speeds up
11.3 Using Lenses
![Page 51: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/51.jpg)
Lesson 3 Review
Which uses a curved mirror to form an image that is magnified by an eyepiece lens?
A refracting telescope
B reflecting telescope
C camera
D microscope
11.3 Using Lenses
![Page 52: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/52.jpg)
End of Lesson 3
![Page 53: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/53.jpg)
11.4 The Eye and Vision
cornea
pupil
iris
retina
pigment
![Page 54: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/54.jpg)
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.
11.4 The Eye and Vision
![Page 55: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/55.jpg)
Cornea• Light enters your eye through the cornea, which is a
clear area of the sclera—the outer layer of the eye.
11.4 The Eye and Vision
The Eye
![Page 56: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/56.jpg)
Cornea
11.4 The Eye and Vision
![Page 57: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/57.jpg)
Iris• The pupil is the dark opening into the interior of your
eye.
11.4 The Eye and Vision
• The pupil is surrounded by the iris—the colored part of your eye behind the cornea.
![Page 58: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/58.jpg)
Lens
• The lens of your eye is convex and flexible.
11.4 The Eye and Vision
• The ciliary muscles attached to the lens change its shape depending on the distance of the object being looked at.
![Page 59: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/59.jpg)
Retina• The retina is a sheet of light-sensitive cells in the
back of the eye.
11.4 The Eye and Vision
• Rod cells respond to dim light and cone cells enable you to see colors.
![Page 60: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/60.jpg)
11.4 The Eye and Vision
![Page 61: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/61.jpg)
11.4 The Eye and Vision
![Page 62: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/62.jpg)
11.4 The Eye and Vision
![Page 63: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/63.jpg)
Seeing Color• The response of cone cells to different wavelengths of
light cause you to see objects as having color.
11.4 The Eye and Vision
• Three types of cone cells:– 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.
![Page 64: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/64.jpg)
Pigment Colors• 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.
11.4 The Eye and Vision
![Page 65: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/65.jpg)
Pigment Colors (cont.)
11.4 The Eye and Vision
![Page 66: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/66.jpg)
Color Printing• The pictures in magazines are formed by many tiny
dots of color.
• Usually, the primary colors of pigments, as well as black, are used.
11.4 The Eye and Vision
![Page 67: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/67.jpg)
Common Vision Problems• Color deficiency: either lack red or green cones, or
the cones do not function correctly
11.4 The Eye and Vision
![Page 68: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/68.jpg)
Common Vision Problems (cont.)
• Nearsightedness: cannot see faraway objects clearly
11.4 The Eye and Vision
![Page 69: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/69.jpg)
Common Vision Problems (cont.)
• Farsightedness: cannot see nearby objects clearly
11.4 The Eye and Vision
How are lenses used to correct vision?
![Page 70: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/70.jpg)
Lesson 4 Review
What controls the amount of light that enters your eye?
A ciliary muscles
B cornea
C sclera
D iris
11.4 The Eye and Vision
![Page 71: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/71.jpg)
Lesson 4 Review
What part of the eye enables you to see colors?
A pupil
B rod cells
C cone cells
D optic nerve
11.4 The Eye and Vision
![Page 72: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/72.jpg)
Lesson 4 Review
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
11.4 The Eye and Vision
![Page 73: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/73.jpg)
End of Lesson 4
![Page 74: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/74.jpg)
Chapter Assessment
California Standards Practice
Concepts in Motion
Image Bank
Science Online
Chapter Resources Menu
Click on a hyperlink to view the corresponding feature.
![Page 75: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/75.jpg)
What is the wavelength range of visible light?
A 700–400 nm
B 200–600 nm
C 300–900 nm
D 800–300 nm
Chapter Assessment 1
![Page 76: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/76.jpg)
What occurs when light waves strike a material and pass through it?
A reflection
B absorption
C transmission
D scattering
Chapter Assessment 2
![Page 77: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/77.jpg)
Which is true according to the law of reflection?
A if light is not refracted, it is reflected
B parallel rays of light remain parallel when they are reflected
C the angle of incidence equals the angle of reflection
D the angle of reflection is twice the angle of incidence
Chapter Assessment 3
![Page 78: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/78.jpg)
Which describes the image formed by an object more than two focal lengths from a convex lens?
A upside down and larger than the object
B upside down and smaller than the object
C right side up and smaller than the object
D right side up and larger than the object
Chapter Assessment 4
![Page 79: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/79.jpg)
Which part of the eye contains light-sensitive rods and cones?
A sclera
B cornea
C optic nerve
D retina
Chapter Assessment 5
![Page 80: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/80.jpg)
What property of a wave increases as wavelength decreases?
A crest
B trough
C frequency
D amplitude
CA Standards Practice 1
SCI 6.a
![Page 81: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/81.jpg)
In which order does light pass through the parts of the eye?
A lens, retina, pupil
B lens, pupil, retina
C retina, lens, pupil
D pupil, lens, retina
CA Standards Practice 2
SCI 6.b
![Page 82: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/82.jpg)
Which light waves are refracted the least after passing through a prism?
A red
B violet
C yellow
D blue
CA Standards Practice 3
SCI 6.c
![Page 83: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/83.jpg)
What occurs when you look at an object at the bottom of a pool of water?
A reflection
B refraction
C absorption
D scattering
CA Standards Practice 4
SCI 6.f
![Page 84: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/84.jpg)
What type of lens is present in both your eye and a microscope?
A objective
B eyepiece
C convex
D concave
CA Standards Practice 5
SCI 6.d
![Page 85: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/85.jpg)
Concepts in Motion 1
![Page 86: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/86.jpg)
Concepts in Motion 2
![Page 87: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/87.jpg)
Concepts in Motion 3
![Page 88: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/88.jpg)
Image Bank
![Page 89: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/89.jpg)
Image Bank
![Page 90: Chapter Menu Lesson 1:What is light?What is light? Lesson 2:Light and MatterLight and Matter Lesson 3:Using LensesUsing Lenses Lesson 4:The Eye and](https://reader031.vdocument.in/reader031/viewer/2022013100/551550485503465e608b6695/html5/thumbnails/90.jpg)
End of Resources