The calm belt exists because the Equator is the Earth's primary heat engine. When we speak of "calm" in a meteorological sense, we mean the absence of horizontal surface winds. Around the Equator, the air is occupied with vertical motion—rising high into the troposphere to begin the Hadley Cell cyclRead more
The calm belt exists because the Equator is the Earth’s primary heat engine. When we speak of “calm” in a meteorological sense, we mean the absence of horizontal surface winds. Around the Equator, the air is occupied with vertical motion—rising high into the troposphere to begin the Hadley Cell cycle. This leaves the surface with very little lateral air movement. This belt is essential to the global climate because it acts as the starting point for the moisture and heat transport that eventually feeds weather systems in the temperate and polar regions.
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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 mRead more
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.
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While the core of the equatorial low is at 0° latitude, the belt of rising air and low pressure typically spans a 20-degree wide band (10° on either side). This area receives the most direct solar radiation throughout the year. As the sun heats the surface, the air becomes buoyant and rises, creatinRead more
While the core of the equatorial low is at 0° latitude, the belt of rising air and low pressure typically spans a 20-degree wide band (10° on either side). This area receives the most direct solar radiation throughout the year. As the sun heats the surface, the air becomes buoyant and rises, creating a vacuum that pulls in the Trade Winds. Because the air is moving upward rather than sideways, surface winds are weak. This 10° N to 10° S zone is the most thermally active region on the planet, driving the global Hadley Cell circulation.
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The Doldrums (a maritime term for "dull" or "sluggish") is a zone within the ITCZ where the air is moving primarily upward. Because there is very little horizontal wind, sailing ships in the past would often get "stuck" here for days or weeks. While the broader low-pressure belt extends to 10°, theRead more
The Doldrums (a maritime term for “dull” or “sluggish”) is a zone within the ITCZ where the air is moving primarily upward. Because there is very little horizontal wind, sailing ships in the past would often get “stuck” here for days or weeks. While the broader low-pressure belt extends to 10°, the most profound “calm” is found in this 5° N to 5° S band. It is a region of high humidity and high temperature where the air is almost always saturated, leading to the daily development of massive convective clouds and heavy rain.
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In the Doldrums, the primary atmospheric movement is vertical. As solar energy warms the ocean and land, the air becomes less dense and rises into the upper atmosphere. This creates a permanent low-pressure zone. Because the Trade Winds from the North and South converge here and rise, they effectiveRead more
In the Doldrums, the primary atmospheric movement is vertical. As solar energy warms the ocean and land, the air becomes less dense and rises into the upper atmosphere. This creates a permanent low-pressure zone. Because the Trade Winds from the North and South converge here and rise, they effectively “neutralize” each other at the surface. This results in the “calm” that gives the region its name. However, this calm is frequently broken by violent, localized thunderstorms fueled by the rising, moisture-laden air, making the weather here both stagnant and unpredictable.
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The calm belt is found on both sides of which line?
The calm belt exists because the Equator is the Earth's primary heat engine. When we speak of "calm" in a meteorological sense, we mean the absence of horizontal surface winds. Around the Equator, the air is occupied with vertical motion—rising high into the troposphere to begin the Hadley Cell cyclRead more
The calm belt exists because the Equator is the Earth’s primary heat engine. When we speak of “calm” in a meteorological sense, we mean the absence of horizontal surface winds. Around the Equator, the air is occupied with vertical motion—rising high into the troposphere to begin the Hadley Cell cycle. This leaves the surface with very little lateral air movement. This belt is essential to the global climate because it acts as the starting point for the moisture and heat transport that eventually feeds weather systems in the temperate and polar regions.
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See lessHow many pressure belts are there on the globe? (A) 7 (B) 9 (C) 5 (D) 6
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 mRead more
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.
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Android: https://play.google.com/store/apps/details?id=com.ta.exam
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See lessTo what latitude does the equatorial low-pressure belt extend on both sides of the equator? (A) 15° (B) 5° (C) 20° (D) 10°
While the core of the equatorial low is at 0° latitude, the belt of rising air and low pressure typically spans a 20-degree wide band (10° on either side). This area receives the most direct solar radiation throughout the year. As the sun heats the surface, the air becomes buoyant and rises, creatinRead more
While the core of the equatorial low is at 0° latitude, the belt of rising air and low pressure typically spans a 20-degree wide band (10° on either side). This area receives the most direct solar radiation throughout the year. As the sun heats the surface, the air becomes buoyant and rises, creating a vacuum that pulls in the Trade Winds. Because the air is moving upward rather than sideways, surface winds are weak. This 10° N to 10° S zone is the most thermally active region on the planet, driving the global Hadley Cell circulation.
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Download the app now!
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See lessWhat is the general extent of the Doldrums belt?
The Doldrums (a maritime term for "dull" or "sluggish") is a zone within the ITCZ where the air is moving primarily upward. Because there is very little horizontal wind, sailing ships in the past would often get "stuck" here for days or weeks. While the broader low-pressure belt extends to 10°, theRead more
The Doldrums (a maritime term for “dull” or “sluggish”) is a zone within the ITCZ where the air is moving primarily upward. Because there is very little horizontal wind, sailing ships in the past would often get “stuck” here for days or weeks. While the broader low-pressure belt extends to 10°, the most profound “calm” is found in this 5° N to 5° S band. It is a region of high humidity and high temperature where the air is almost always saturated, leading to the daily development of massive convective clouds and heavy rain.
Crack SSC CGL 2026 with Competitive Exam Preparation (TA Exam). Access free mock tests, analyze mistakes and boost your exam accuracy today.
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See lessWhat are the characteristics of the Doldrums region? (A) Normal pressure and air subsidence (B) Low pressure and calm winds (C) Low pressure and air subsidence (D) Low pressure and gentle easterly winds
In the Doldrums, the primary atmospheric movement is vertical. As solar energy warms the ocean and land, the air becomes less dense and rises into the upper atmosphere. This creates a permanent low-pressure zone. Because the Trade Winds from the North and South converge here and rise, they effectiveRead more
In the Doldrums, the primary atmospheric movement is vertical. As solar energy warms the ocean and land, the air becomes less dense and rises into the upper atmosphere. This creates a permanent low-pressure zone. Because the Trade Winds from the North and South converge here and rise, they effectively “neutralize” each other at the surface. This results in the “calm” that gives the region its name. However, this calm is frequently broken by violent, localized thunderstorms fueled by the rising, moisture-laden air, making the weather here both stagnant and unpredictable.
Crack SSC CGL 2026 with Competitive Exam Preparation (TA Exam). Access free mock tests, analyze mistakes and boost your exam accuracy today.
Download the app now!
Android: https://play.google.com/store/apps/details?id=com.ta.exam
iOS: https://apps.apple.com/app/id6759824444
See less