TED-Ed: The science of smog - Kim Preshoff

The video discusses the history and types of smog, focusing on the 1943 Los Angeles smog event. It explains the differences between industrial and photochemical smog, their causes, and the factors affecting their formation. The health and environmental impacts of smog are highlighted, along with historical and modern responses to combat it, such as the Clean Air Act and vehicle emission regulations. The video emphasizes the ongoing global challenge of smog and the need for sustainable solutions.

What was the initial reaction of Los Angeles residents to the smog in 1943?

• They ignored it as a common occurrence.

• They assumed it was a new type of fog.

• They thought it was a natural weather phenomenon.

• They believed it was a chemical warfare attack.

Which compounds are primarily responsible for the formation of photochemical smog?

• Methane and ammonia

• Ozone and particulate matter

• Volatile Organic Compounds and nitrogen oxides

• Carbon dioxide and sulfur dioxide

What environmental condition contributes to the trapping of smog in cities like Los Angeles?

• High humidity

• Strong winds

• Temperature inversion

• Frequent rainfall

How does smog affect human health?

• It improves lung function.

• It causes eye irritation and respiratory issues.

• It enhances immune response.

• It has no significant health effects.

What was a significant outcome of the Great Smog of London in 1952?

• Introduction of the Clean Air Act

• Development of new industrial areas

• Increased coal production

• Rise in tourism

Which countries are currently facing high levels of industrial smog due to coal dependency?

• China and Poland

• Australia and New Zealand

• Brazil and Argentina

• Canada and Sweden

What is one method governments have used to reduce smog in urban areas?

• Promoting deforestation

• Encouraging coal burning

• Banning cars from driving on certain days

• Increasing fossil fuel usage