Environmental Engineering Reference
In-Depth Information
85.
C
86.
B
87.
C
88.
A
89.
D
90.
D
91.
E
92.
A
93.
C
94.
B
95.
C
96.
A
97.
A
98.
C
99.
E
100.
B
Answer Explanations
Section I: Multiple-Choice Questions
1.
D
An extinct volcano is a volcano that is not erupting and most likely will not erupt at any point again.
2.
E
A shield volcano is a slowly erupting volcano with a broad base, gradual slopes, and usually craters at
the top.
3.
A
An active volcano is a volcano that is presently erupting or has a large amount of seismic and thermal
activity and will eventfully erupt.
4.
E
Traditional agriculture uses manual labor, animal labor, and simple tools to grow crops.
5.
E
The Green Revolution of the 20th century was characterized by the development of high-yield crops,
the wide use of pesticides, and the augmentation of irrigation infrastructure.
6.
D
Beneficial ozone acts as a protective layer, filtering ultraviolet radiation in the stratosphere including
all UVC, 95 percent of UVB, and most all UVA. The majority of UV rays that reach the Earth's surface
are UVA.
7.
A
25 watts × 10,000 hours = 250,000 Wh. Then, 250,000 Wh × (1 k ÷ 1,000) = 250 kWh. And 250kWh
× $0.10/kWh = $25.
8.
B
100 watts × 1,000 hours = 100,000 Wh. Then, 100,000 Wh × (1 k ÷ 1,000) = 100 kWh. And 100kWh
× $0.10/kWh = $10.
