The troposphere receives its heat primarily from the planet's surface through a combination of radiation, conduction and convection. Although the sun is the ultimate energy source, the atmosphere does not absorb solar energy efficiently. Instead, the Earth's surface absorbs the sun's rays and then rRead more
The troposphere receives its heat primarily from the planet’s surface through a combination of radiation, conduction and convection. Although the sun is the ultimate energy source, the atmosphere does not absorb solar energy efficiently. Instead, the Earth’s surface absorbs the sun’s rays and then re-emits that energy as infrared radiation. This heat is most concentrated in the lowest part of the atmosphere, making the troposphere warmer than the layers like the mesosphere. This ground-up heating mechanism is why mountain peaks are colder than valleys, despite being technically closer to the sun in the sky.
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The tropopause serves as the vital interface between the Earth’s lowest atmospheric layer and the stratosphere. Geographically, its altitude varies, reaching approximately eighteen kilometers at the equator but dropping to eight kilometers near the poles. Within this zone, the environmental lapse raRead more
The tropopause serves as the vital interface between the Earth’s lowest atmospheric layer and the stratosphere. Geographically, its altitude varies, reaching approximately eighteen kilometers at the equator but dropping to eight kilometers near the poles. Within this zone, the environmental lapse rate essentially becomes zero, meaning temperatures no longer decrease as one climbs higher. This boundary is significant for aviators and meteorologists because it limits the height of clouds and thunderstorms. By acting as a ceiling for convection, the tropopause ensures that moisture and pollutants remain mostly concentrated within the troposphere, effectively regulating the planet’s overall weather patterns.
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Mountains are a dominant feature of the Earth's lithosphere, covering about 26% of its total land area. Geographically, these regions are essential as "water towers," providing fresh water to nearly half of humanity. Their presence influences global climate by acting as barriers to wind and moistureRead more
Mountains are a dominant feature of the Earth’s lithosphere, covering about 26% of its total land area. Geographically, these regions are essential as “water towers,” providing fresh water to nearly half of humanity. Their presence influences global climate by acting as barriers to wind and moisture, leading to orographic rainfall. While they cover a substantial area, mountains are often sparsely populated due to rugged terrain and harsh climates. Understanding this percentage is crucial for environmental planning, as these regions are highly sensitive to climate change and human-induced land degradation, impacting the ecosystem services they provide.
In the classification of relief features, mountains are categorized as Second-order landforms. This hierarchy is based on the scale and origin of the feature. First-order relief includes the massive structural units of the Earth: the continents and the ocean basins. Second-order landforms, like mounRead more
In the classification of relief features, mountains are categorized as Second-order landforms. This hierarchy is based on the scale and origin of the feature. First-order relief includes the massive structural units of the Earth: the continents and the ocean basins. Second-order landforms, like mountains and plateaus, are created by endogenic (internal) forces such as folding, faulting and volcanic activity occurring on the crust. These are the large-scale “constructional” features of our planet. Finally, Third-order landforms are smaller, “destructional” features like valleys, canyons and cirques, which are carved into the second-order forms by exogenic (external) erosional processes.
While mountains cover 26% of the Earth's land, they are home to only about 10% of the global population. This low percentage reflects the geographical challenges of mountain living, including restricted agricultural space, isolation and susceptibility to natural hazards like landslides. Most mountaiRead more
While mountains cover 26% of the Earth’s land, they are home to only about 10% of the global population. This low percentage reflects the geographical challenges of mountain living, including restricted agricultural space, isolation and susceptibility to natural hazards like landslides. Most mountain dwellers reside in plateaus or valleys within these ranges. Despite this small resident population, mountains have a massive “geographical footprint.” They provide essential resources—water, hydroelectric power and biodiversity—to the billions of people living in the plains below. Consequently, the sustainable management of mountain environments is a critical global priority.
The troposphere is the warmest layer of the atmosphere because – (A) It is heated by the Earth’s surface (B) Heat is generated in it (C) It is closest to the sun (D) It contains charged particles
The troposphere receives its heat primarily from the planet's surface through a combination of radiation, conduction and convection. Although the sun is the ultimate energy source, the atmosphere does not absorb solar energy efficiently. Instead, the Earth's surface absorbs the sun's rays and then rRead more
The troposphere receives its heat primarily from the planet’s surface through a combination of radiation, conduction and convection. Although the sun is the ultimate energy source, the atmosphere does not absorb solar energy efficiently. Instead, the Earth’s surface absorbs the sun’s rays and then re-emits that energy as infrared radiation. This heat is most concentrated in the lowest part of the atmosphere, making the troposphere warmer than the layers like the mesosphere. This ground-up heating mechanism is why mountain peaks are colder than valleys, despite being technically closer to the sun in the sky.
Crack SSC CGL 2026 with Competitive Exam Preparation TA Exam! Take free mock tests and analyze your accuracy instantly.
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See lessWhat is the transition zone between the troposphere and the stratosphere called?
The tropopause serves as the vital interface between the Earth’s lowest atmospheric layer and the stratosphere. Geographically, its altitude varies, reaching approximately eighteen kilometers at the equator but dropping to eight kilometers near the poles. Within this zone, the environmental lapse raRead more
The tropopause serves as the vital interface between the Earth’s lowest atmospheric layer and the stratosphere. Geographically, its altitude varies, reaching approximately eighteen kilometers at the equator but dropping to eight kilometers near the poles. Within this zone, the environmental lapse rate essentially becomes zero, meaning temperatures no longer decrease as one climbs higher. This boundary is significant for aviators and meteorologists because it limits the height of clouds and thunderstorms. By acting as a ceiling for convection, the tropopause ensures that moisture and pollutants remain mostly concentrated within the troposphere, effectively regulating the planet’s overall weather patterns.
Crack SSC CGL 2026 with Competitive Exam Preparation TA Exam! Take free mock tests and analyze your accuracy instantly.
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 percentage of the total land area of the lithosphere is covered by mountains?
Mountains are a dominant feature of the Earth's lithosphere, covering about 26% of its total land area. Geographically, these regions are essential as "water towers," providing fresh water to nearly half of humanity. Their presence influences global climate by acting as barriers to wind and moistureRead more
Mountains are a dominant feature of the Earth’s lithosphere, covering about 26% of its total land area. Geographically, these regions are essential as “water towers,” providing fresh water to nearly half of humanity. Their presence influences global climate by acting as barriers to wind and moisture, leading to orographic rainfall. While they cover a substantial area, mountains are often sparsely populated due to rugged terrain and harsh climates. Understanding this percentage is crucial for environmental planning, as these regions are highly sensitive to climate change and human-induced land degradation, impacting the ecosystem services they provide.
See lessIn which category of landforms are mountains classified? (A) First order (B) Second order (C) Third order (D) None of these
In the classification of relief features, mountains are categorized as Second-order landforms. This hierarchy is based on the scale and origin of the feature. First-order relief includes the massive structural units of the Earth: the continents and the ocean basins. Second-order landforms, like mounRead more
In the classification of relief features, mountains are categorized as Second-order landforms. This hierarchy is based on the scale and origin of the feature. First-order relief includes the massive structural units of the Earth: the continents and the ocean basins. Second-order landforms, like mountains and plateaus, are created by endogenic (internal) forces such as folding, faulting and volcanic activity occurring on the crust. These are the large-scale “constructional” features of our planet. Finally, Third-order landforms are smaller, “destructional” features like valleys, canyons and cirques, which are carved into the second-order forms by exogenic (external) erosional processes.
See lessWhat percentage of the world’s population lives in mountainous regions? (A) 1% (B) 10% (C) 5% (D) 9%
While mountains cover 26% of the Earth's land, they are home to only about 10% of the global population. This low percentage reflects the geographical challenges of mountain living, including restricted agricultural space, isolation and susceptibility to natural hazards like landslides. Most mountaiRead more
While mountains cover 26% of the Earth’s land, they are home to only about 10% of the global population. This low percentage reflects the geographical challenges of mountain living, including restricted agricultural space, isolation and susceptibility to natural hazards like landslides. Most mountain dwellers reside in plateaus or valleys within these ranges. Despite this small resident population, mountains have a massive “geographical footprint.” They provide essential resources—water, hydroelectric power and biodiversity—to the billions of people living in the plains below. Consequently, the sustainable management of mountain environments is a critical global priority.
See less