Chapter 2, Problem 2.1YT

Scientific Practices Footprints in the Air

Hiking boot treads, asphalt pavement, corn fields—each of these is an example of a “ground print” left by humans because each one alters the lay of the land. Similarly, our activities leave “air prints” that alter the composition of our atmosphere.

Identify three indoor and three outdoor sources that emit chemicals into the air around you. For each of these sources, describe whether they (1) hurt the air quality, (2) improve the air quality, or (3) have some effect, but you don’t know what it is.

Interpretation Introduction

Interpretation:

The three indoor and outdoor sources that emit chemicals into the air have to be identified and to be described how they affect the quality of air.

Concept Introduction:

Quality of air refers to a condition in which air in the surrounding. Good air quality refers to the condition of air with less pollution, clear air and free from smog.

Explanation of Solution

Quality of air refers to a condition in which air in the surrounding. Good air quality refers to the condition of air with less pollution, clear air and free from smog.

The three indoor sources include,

• • Emission of gases from chimney- they have effect on air quality.
• • CFC’s emitted from air condition and refrigerator-hurt the air quality.
• • Burning of wood- hurt the air quality.

The three outdoor sources include,

• • Burning of wood, vegetation, fuels etc- hurt the air quality.
• • Vehicles with poor silencer - hurt the air quality.
• • Emission of gases from the industries- hurt the air quality.