•
Career Investigations
•
Self Study Quizzes
•
Crossword Puzzles
•
Career Investigations
•
Self Study Quizzes
•
Crossword Puzzles
Chapters 01 - 05
Chapters 06 - 11
Chapters 12 - 17
Chapters 18 - 22
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
Chapter 19
Chapter 20
Chapter 21
Chapter 22
•
Career Investigations
•
Self Study Quizzes
•
Crossword Puzzles
Chapters 01 - 05
Chapters 06 - 11
Chapters 12 - 17
Chapters 18 - 22
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
Chapter 19
Chapter 20
Chapter 21
Chapter 22
•
Career Investigations
•
Self Study Quizzes
•
Crossword Puzzles
Chapters 01 - 05
Chapters 06 - 11
Chapters 12 - 17
Chapters 18 - 22
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
Chapter 19
Chapter 20
Chapter 21
Chapter 22
•
Lesson Plans
•
Answer Key for Career Investigations
•
WebQuests
•
Technology Education Links
•
Interactive Explorations
Chapter 18:
Lasers and Fiber Optics
1.
Forms of electromagnetic radiation include
a.
visible light.
b.
radio waves.
c.
X rays.
d.
all of the above.
2.
Ordinary light is a type of
a.
electromagnetic wave.
b.
monochromatic light.
c.
directional light.
d.
coherent light.
3.
Lasers are grouped into four classes according to
a.
their energy source.
b.
the hazard they present.
c.
their active medium.
d.
the tasks they perform.
4.
Which of the following is
not
a basic subsystem of the laser?
a.
an excitation mechanism
b.
a scanning mechanism
c.
an active medium
d.
a feedback mechanism
5.
The part of the laser system that changes energy to light is the
a.
excitation mechanism.
b.
scanning mechanism.
c.
active medium.
d.
feedback mechanism.
6.
The output coupler in a laser system is part of the
a.
excitation mechanism.
b.
scanning mechanism.
c.
active medium.
d.
feedback mechanism.
7.
The type of laser used most often in technology classes is the
a.
semiconductor laser.
b.
helium-neon laser.
c.
ruby laser.
d.
carbon dioxide laser.
8.
Fiber-optic systems send information as
a.
coded light pulses.
b.
continuous beams.
c.
electronic signals.
d.
all of the above.
9.
In a fiber-optic telephone system, sound travels in
a.
watts.
b.
audio waves.
c.
bits.
d.
electronic signals.
10.
In manufacturing, lasers are used to
a.
drill holes in materials.
b.
cut heavy steel plates.
c.
weld parts for ships.
d.
all of the above.
