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Integrated Science
Unit 5, Chapter 15
Unit Five: Light and Optics
Chapter 15 Optics
15.1
Seeing an Image
15.2
The Human Eye
15.3
Optical Technology
Chapter 15 Learning Goals
Describe the function of the human eye.
Describe the difference between objects and images.
Describe and demonstrate the formation of an image.
Draw a ray diagram for a lens.
Calculate the magnification of a lens.
Describe the index of refraction and explain how it is applied in the
making of lenses.
Identify the characteristics of reflection.
Draw a reflected ray.
Predict how light will bend when its speed changes.
Understand internal reflection.
Identify uses of fiber optics.
Chapter 15 Vocabulary Terms
angle of incidence
angle of refraction
converging
critical angle
diverging
focal length
focal point
focus
image
incident ray
index of refraction
lens
normal
ray diagrams
real image
reflected ray
refraction
total internal reflection
virtual image
15.1 Seeing an Image
Key Question:
What does
magnification
really mean, and
how do you plot a
reflected image?
*Read text section 15.1 AFTER Investigation 15.1
15.1 Seeing an image: Optics
The
study of how light
behaves is called optics.
Optics
deals with the
collection and use of light
to create images.
Lenses,
mirrors, and
prisms are part of the
study of optics.
15.1 Images
Objects are real physical
things that give off or
reflect light rays.
Images are “pictures” of
objects that form where
light rays from the object
meet.
15.1 Optical Systems
Optical systems collect
light rays.
Optical Systems bend
collected light rays to
form images.
15.2 The Human Eye
15.2 Forming an Image
The
lens of the
eye can change
its shape to focus
at different
distances.
15.2 The Human Eye
Key Question:
How does a lens
form an image?
*Read text section 15.2 BEFORE Investigation 15.2
15.3 Optical Technology
A light pipe traps light by
total internal reflection.
A fiber optic is thin light
pipe that is flexible.
Any light that enters the
fiber outside a certain
angle will be lost.
15.3 Optical Technology
Key Question:
How are optics used
in everyday life?
*Read text section 15.3 BEFORE Investigation 15.3