Section #: 25.3
Air Resources
Practice Test
1.
Oxygen __________.
SC.D.1.4.4
a.
was used up by early life-forms during photosynthesis
b.
is released by volcanic eruptions in large quantities
c.
has not always been a part of Earth's atmosphere
d.
has been in Earth's atmosphere for the past 4.6 billion years
2.
How is oxygen released into Earth's atmosphere?
SC.D.1.4.1
a.
photosynthetic plants
b.
volcanic eruptions
c.
burning forests
d.
burning fossil fuels
3.
What part of this township shown in the map can negatively impact the air resources?
SC.G.2.4.6
a.
highway
b.
woods
c.
gravel pit
d.
river
Hint
4.
What is an example of natural air pollution?
SC.G.2.4.6
a.
dust from desertification
b.
acid precipitation
c.
carbon monoxide from engine exhaust
d.
smoke from forest fires
Hint
5.
Oxygen makes up __________ percent of Earth's air.
SC.E.1.4.3
a.
12
b.
21
c.
73
d.
80
Hint
