Smog Flashcards
1
Q
What is smog?
A
Smog is a type of air pollution caused by tiny particles in the air. The word comes from a mixture of the words smoke and fog and was first used to describe the hazy mixture of smoke and sulfur dioxide produced by the burning of large amounts of coal in London in the early 1900s. Today, smog generally refers to photochemical smog, which is the haze created when sunlight reacts with nitrogen oxides and volatile organic compounds that can be found in fossil fuel emissions from automobiles, factories, and power plants.
