Indiana Science Grade 8

Chapter 21: Our Impact on Water and Air

Section 2 Self-Check Quiz-Eng.

1.
Smog is usually found in _____ areas.
A)urban
B)tropical
C)sparsely populated
D)desolate
2.
How is photochemical smog formed?
A)with rain
B)with humidity
C)with sunlight
D)with electricity
3.
Is ozone that is near Earth's surface beneficial or harmful?
A)Harmful; it doesn't let enough sunlight through.
B)Beneficial; it protects Earth from the Sun's harmful rays.
C)Beneficial; it cleans the air.
D)Harmful; it is a major component of smog, and can damage sensitive tissues.
4.
What topographical reason contributes to Los Angeles's smog problem?
A)the nearby ocean
B)The mountains to the east prevent smog from being carried away by prevailing winds.
C)The city's position on the globe receives more direct sunlight.
D)the strong winds coming off the water
5.
What two chemicals combine with moisture in the air to make acids?
A)sulfur oxides and carbon dioxide
B)nitrogen oxides and ozone
C)sulfur oxides and nitrogen oxides
D)carbon dioxide and ozone
6.
If something measures 7 on the pH scale, it is __________.
A)acidic
B)basic
C)neutral
D)debatable
7.
What does the Air Quality Index measure?
A)oxygen levels
B)smog levels
C)ozone levels
D)carbon dioxide levels
8.
How does carbon monoxide poison a body?
A)It breaks down the tissue.
B)It replaces oxygen in the blood.
C)It chokes the blood vessels.
D)It kills red blood cells.
9.
Particulate matter that is found in black smoke consists of __________.
A)dust
B)pollen
C)all of the above
D)soot
10.
The Montreal Protocol set forth plans for countries __________.
A)to phase out chlorofluorocarbons by 2000
B)to decrease the amount of carbon dioxide in the atmosphere
C)to switch over to mass transit
D)to share the cost of cleaning oceans
11.
What does a scrubber do?
A)It lets gases in smoke evaporate to remove carbon dioxide.
B)It's the machine that power plants use to scrub the tanks.
C)It lets gases in smoke dissolve in water to remove sulfur.
D)A scrubber is the employee who checks the emission from factories.
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