The strength of the Jet Stream is directly proportional to the temperature difference between two air masses. The most powerful is the Polar Jet, located at the boundary of the Polar and Ferrel cells. Because the air is colder and denser to the north and warmer to the south, a steep pressure gradienRead more
The strength of the Jet Stream is directly proportional to the temperature difference between two air masses. The most powerful is the Polar Jet, located at the boundary of the Polar and Ferrel cells. Because the air is colder and denser to the north and warmer to the south, a steep pressure gradient is established. As air moves to equalize this pressure, the Coriolis effect deflects it, causing it to race eastward at speeds exceeding 200 mph. These winds are crucial for global aviation and act as a steering mechanism for surface weather systems and storms across the mid-latitudes.
SSC, CGL, MTS Question set. Review errors, practice daily and conquer exams with Competitive TA Exam. Start Your Journey.
A cumulonimbus cloud begins as a small cumulus cloud but grows vertically due to intense thermal convection. As moisture condenses, it releases latent heat, which further fuels the upward movement of air. These clouds are unique because they possess internal "updrafts" and "downdrafts" that create tRead more
A cumulonimbus cloud begins as a small cumulus cloud but grows vertically due to intense thermal convection. As moisture condenses, it releases latent heat, which further fuels the upward movement of air. These clouds are unique because they possess internal “updrafts” and “downdrafts” that create the friction necessary for electrical charging (lightning). When the top of the cloud reaches the stable layer of the stratosphere, it spreads out horizontally, forming the “anvil” shape. Because of their immense energy and height, they are a major focus for severe weather forecasting and aviation safety.
SSC, CGL, MTS Question set. Review errors, practice daily and conquer exams with Competitive TA Exam. Start Your Journey.
Rossby waves (or planetary waves) are fundamental to large-scale weather patterns. When the jet stream develops these deep "loops," it allows cold arctic air to plunge south (troughs) and warm tropical air to surge north (ridges). If these waves become "blocked" or move very slowly, it can lead to pRead more
Rossby waves (or planetary waves) are fundamental to large-scale weather patterns. When the jet stream develops these deep “loops,” it allows cold arctic air to plunge south (troughs) and warm tropical air to surge north (ridges). If these waves become “blocked” or move very slowly, it can lead to persistent weather events like long-term heatwaves or extended periods of heavy snow. The interaction of these waves with the Earth’s rotating surface is what ultimately dictates the position of high and low-pressure systems across the temperate zones of both hemispheres.
SSC, CGL, MTS Question set. Review errors, practice daily and conquer exams with Competitive TA Exam. Start Your Journey.
In the Doldrums, the intense solar heating at the equator causes air to expand and rise rapidly. This upward movement creates a belt of low pressure characterized by high humidity, frequent afternoon thunderstorms and "sultry" weather. For early sailors, the lack of horizontal wind meant ships couldRead more
In the Doldrums, the intense solar heating at the equator causes air to expand and rise rapidly. This upward movement creates a belt of low pressure characterized by high humidity, frequent afternoon thunderstorms and “sultry” weather. For early sailors, the lack of horizontal wind meant ships could be stranded for weeks. While the air is calm at the surface, the upper atmosphere is highly active as the rising air begins its journey toward the poles as part of the Hadley Cell. The ITCZ also shifts slightly north or south depending on the season.
Solve Staff Selection Commission SSC Previous Year Papers on TA Exam and track your accuracy level. Download the app now!
The term "adiabatic" refers to a process where no heat is exchanged with the surrounding environment. When air sinks (subsides), the weight of the atmosphere above it increases, squeezing the air molecules together. This compression forces the molecules to move faster, which we detect as a rise in tRead more
The term “adiabatic” refers to a process where no heat is exchanged with the surrounding environment. When air sinks (subsides), the weight of the atmosphere above it increases, squeezing the air molecules together. This compression forces the molecules to move faster, which we detect as a rise in temperature. This is the opposite of adiabatic cooling, which happens when air rises and expands. Adiabatic heating is the reason why air descending the leeward side of a mountain range (like the Chinook or Foehn winds) becomes very warm and dry.
Solve Staff Selection Commission SSC Previous Year Papers on TA Exam and track your accuracy level. Download the app now!
What is the ‘Jet Stream’ primarily caused by?
The strength of the Jet Stream is directly proportional to the temperature difference between two air masses. The most powerful is the Polar Jet, located at the boundary of the Polar and Ferrel cells. Because the air is colder and denser to the north and warmer to the south, a steep pressure gradienRead more
The strength of the Jet Stream is directly proportional to the temperature difference between two air masses. The most powerful is the Polar Jet, located at the boundary of the Polar and Ferrel cells. Because the air is colder and denser to the north and warmer to the south, a steep pressure gradient is established. As air moves to equalize this pressure, the Coriolis effect deflects it, causing it to race eastward at speeds exceeding 200 mph. These winds are crucial for global aviation and act as a steering mechanism for surface weather systems and storms across the mid-latitudes.
SSC, CGL, MTS Question set. Review errors, practice daily and conquer exams with Competitive TA Exam. Start Your Journey.
Download the app now!
Android: https://play.google.com/store/apps/details?id=com.ta.exam
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See lessWhich type of cloud is often called a ‘Thunderhead’? (A) Altostratus (B) Cirrocumulus (C) Cumulonimbus (D) Nimbostratus
A cumulonimbus cloud begins as a small cumulus cloud but grows vertically due to intense thermal convection. As moisture condenses, it releases latent heat, which further fuels the upward movement of air. These clouds are unique because they possess internal "updrafts" and "downdrafts" that create tRead more
A cumulonimbus cloud begins as a small cumulus cloud but grows vertically due to intense thermal convection. As moisture condenses, it releases latent heat, which further fuels the upward movement of air. These clouds are unique because they possess internal “updrafts” and “downdrafts” that create the friction necessary for electrical charging (lightning). When the top of the cloud reaches the stable layer of the stratosphere, it spreads out horizontally, forming the “anvil” shape. Because of their immense energy and height, they are a major focus for severe weather forecasting and aviation safety.
SSC, CGL, MTS Question set. Review errors, practice daily and conquer exams with Competitive TA Exam. Start Your Journey.
Download the app now!
Android: https://play.google.com/store/apps/details?id=com.ta.exam
iOS: https://apps.apple.com/app/id6759824444
See lessWhat is the ‘Rossby Wave’ in the atmosphere? (A) A type of sound wave (B) Large-scale meanders in high-altitude winds (C) A localized sea breeze (D) Small ripples in the ionosphere
Rossby waves (or planetary waves) are fundamental to large-scale weather patterns. When the jet stream develops these deep "loops," it allows cold arctic air to plunge south (troughs) and warm tropical air to surge north (ridges). If these waves become "blocked" or move very slowly, it can lead to pRead more
Rossby waves (or planetary waves) are fundamental to large-scale weather patterns. When the jet stream develops these deep “loops,” it allows cold arctic air to plunge south (troughs) and warm tropical air to surge north (ridges). If these waves become “blocked” or move very slowly, it can lead to persistent weather events like long-term heatwaves or extended periods of heavy snow. The interaction of these waves with the Earth’s rotating surface is what ultimately dictates the position of high and low-pressure systems across the temperate zones of both hemispheres.
SSC, CGL, MTS Question set. Review errors, practice daily and conquer exams with Competitive TA Exam. Start Your Journey.
Download the app now!
Android: https://play.google.com/store/apps/details?id=com.ta.exam
iOS: https://apps.apple.com/app/id6759824444
See lessThe ‘Doldrums’ are located in which pressure belt?
In the Doldrums, the intense solar heating at the equator causes air to expand and rise rapidly. This upward movement creates a belt of low pressure characterized by high humidity, frequent afternoon thunderstorms and "sultry" weather. For early sailors, the lack of horizontal wind meant ships couldRead more
In the Doldrums, the intense solar heating at the equator causes air to expand and rise rapidly. This upward movement creates a belt of low pressure characterized by high humidity, frequent afternoon thunderstorms and “sultry” weather. For early sailors, the lack of horizontal wind meant ships could be stranded for weeks. While the air is calm at the surface, the upper atmosphere is highly active as the rising air begins its journey toward the poles as part of the Hadley Cell. The ITCZ also shifts slightly north or south depending on the season.
Solve Staff Selection Commission SSC Previous Year Papers on TA Exam and track your accuracy level. Download the app now!
Android: https://play.google.com/store/apps/details?id=com.ta.exam
iOS: https://apps.apple.com/app/id6759824444
See lessWhat is ‘Adiabatic’ heating? (A) Heating through solar radiation (B) Heating through the addition of fuel (C) Heating of air due to compression as it sinks (D) Heating through contact with the warm ground
The term "adiabatic" refers to a process where no heat is exchanged with the surrounding environment. When air sinks (subsides), the weight of the atmosphere above it increases, squeezing the air molecules together. This compression forces the molecules to move faster, which we detect as a rise in tRead more
The term “adiabatic” refers to a process where no heat is exchanged with the surrounding environment. When air sinks (subsides), the weight of the atmosphere above it increases, squeezing the air molecules together. This compression forces the molecules to move faster, which we detect as a rise in temperature. This is the opposite of adiabatic cooling, which happens when air rises and expands. Adiabatic heating is the reason why air descending the leeward side of a mountain range (like the Chinook or Foehn winds) becomes very warm and dry.
Solve Staff Selection Commission SSC Previous Year Papers on TA Exam and track your accuracy level. 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