Which U.S. region is most affected by humid air from the Gulf of Mexico, leading to thunderstorms in the summer?
  • Southeast
Which of the following factors has the most impact on the arid climate of the southwestern U.S.?
  • Rain shadow effect and latitude
Which of the following contributes to the high snowfall in the Sierra Nevada during winter?
  • High elevation and Pacific moisture
Why is humidity higher in the southeastern United States compared to the southwestern United States?
  • Influence of the Gulf of Mexico
In which U.S. climate zone are tornadoes most frequent due to the collision of warm and cold air masses?
  • Midwest and Great Plains
Which region has cooler summer temperatures because of its coastal proximity and maritime influence?
  • Pacific Northwest
In which U.S. state would you expect the highest average temperatures in summer due to both latitude and arid conditions?
  • Nevada
Which energy source has seen a dramatic increase in use in the U.S. due to its lower emissions compared to coal?
  • Natural gas