🔍 Key Concepts

• Global wind belts and where they are located by latitude • Differences between trade winds, westerlies, and areas of calm or variable winds • Association of convergence zones with rising air and thunderstorms vs belts of calm

💭 Think About

• First, picture the Earth from equator to poles and mentally mark where the northeast trade winds blow and where the mid-latitude westerlies blow. What type of conditions usually exist in between those two belts? • Compare the usual characteristics of each option: which one is best known for calm or very light, variable winds that once trapped sailing ships for days or weeks? • Think about which terms are more closely linked to high pressure, low pressure, or frontal systems, and which one specifically describes a calm belt.

✅ Before You Answer

• Verify which option is specifically associated with light and variable winds that historically delayed sailing ships. • Check which features are tied to high-pressure centers versus convergence of trade winds near the equator. • Confirm the approximate latitude range of each named feature and see which one lies between the westerlies and northeast trades.