There are seven distinct pressure belts on Earth. These include one Equatorial Low-Pressure Belt, two Subtropical High-Pressure Belts (30° N/S), two Subpolar Low-Pressure Belts (60° N/S) and two Polar High-Pressure Belts at the poles. These belts are the result of unequal solar heating and the Earth’s rotation, forming the global circulation system. ANSWER: (A) 7
Share
The Earth’s pressure system is symmetrical. At the center is the Equatorial Low (1). Moving outward, you find the Subtropical Highs in both hemispheres (2), which are zones of sinking air. Further toward the poles are the Subpolar Lows (2), where air rises again due to the meeting of different air masses. Finally, the Polar Highs (2) exist at the extreme top and bottom of the world where air is coldest and densest. Together, these seven belts act as the primary drivers for the world’s permanent wind systems, such as the Trades and the Westerlies.
Your dream of a government Staff Selection Commission job starts with Competitive Exam Preparation TA App. Get unlimited practice questions today.
Download the app now!
Android: https://play.google.com/store/apps/details?id=com.ta.exam
iOS: https://apps.apple.com/app/id6759824444