Page 139 - Science Course 1 (Book 2)

Air Pollution Mo9-L6a: What is Air Pollution?

Lesson 6

photochemical smog
air pollution that forms from the interaction between
In this topic, you will learn the following chemicals in the air and sunlight.
lessons:
Mo.9 – L6a: What is Air Pollution?
Mo.9 – L6b: Why Do We Monitor Air Quality?

Mo9-L6a What is Air Pollution?

KEY CONCEPTS:
1. How do humans impact air quality?

Vocabulary A-Z

Let us learn some vocabulary
Let’s Begin

air pollution
the contamination of air by harmful substances Sources of Air Pollution
including gases and smoke.
The contamination of air by harmful substances
including gases and smoke is called air pollution.

Point-source pollution is pollution that comes from
an identif able source such as large factories.

An example of natural point-source pollution is an
erupting volcano.

acid precipitation
precipitation that has a lower pH than that of normal
rain water.

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