The video tutorial discusses blizzards, defining them as strong snowstorms with specific wind speeds and durations. It explores the etymology of the term and how blizzards form through the interaction of cold polar air and warm, moist air. The video also explains how different regions classify blizzards, with a focus on the United States and Antarctica. Finally, it highlights some of the most significant blizzards in history, including the 1972 Iran blizzard and the 1993 'storm of the century', detailing their impacts and consequences.

What is the minimum wind speed required for a snowstorm to be classified as a blizzard?

• 20 kilometers per hour

• 35 kilometers per hour

• 56 kilometers per hour

• 72 kilometers per hour

Which of the following is NOT a factor in the formation of a blizzard?

• Warm, humid air from the south

• Cold, dry air from the poles

• Jet stream air currents

• High pressure areas

How does the United States National Weather Services differentiate a severe blizzard from a regular blizzard?

• By the duration of the storm

• By the amount of snowfall

• By the wind speed

• By the temperature drop

What was the estimated death toll of the 1972 Iran blizzard?

• Over 4,000

• Over 3,000

• Over 2,000

• Over 1,000

Which regions were primarily affected by the 'storm of the century' in 1993?

• United States and Canada

• United States and Cuba

• Mexico and Honduras

• Canada and Mexico