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Air closer to the Earth’s surface is heavier because of
- a)Gravitational forces acting on air
- b)Jet air circulation in the upper atmosphere
- c)Cloudiness near equator and poles
- d)Higher air pressure in stratosphere
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Air closer to the Earth’s surface is heavier because of a) Gravitatio...
Atmospheric pressure is caused by the weight of the atmosphere pushing down on itself and the surface below it. Atmospheric pressure decreases with height above the surface of a planet because there is the less total mass in the atmosphere above a reference point as the height of the reference point increases. This is explained by the heaviness of air closer to the Earth. Air is heaviest at sea level because the air molecules are pressed together due to gravity.
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Air closer to the Earth’s surface is heavier because of a) Gravitatio...
Gravitational forces acting on air
- The reason why air closer to the Earth's surface is heavier is due to the gravitational forces acting on it.
- Gravity is a force that pulls objects towards the center of the Earth. It is responsible for keeping the atmosphere in place.
- The force of gravity is stronger closer to the Earth's surface and weaker as you move further away from it.
- As a result, the air molecules near the surface experience a greater gravitational force compared to those in the upper atmosphere.
Effect of gravitational forces on air
- The gravitational force causes the air molecules to be pulled towards the Earth's surface, creating pressure.
- This pressure is known as atmospheric pressure and it decreases with increasing altitude.
- The weight of the air above a certain point in the atmosphere creates pressure at that point.
- Therefore, the air closer to the Earth's surface experiences a higher atmospheric pressure compared to the air in the upper atmosphere.
Density and weight of air
- The air near the Earth's surface is denser compared to the air in the upper atmosphere.
- Density is the mass of an object per unit volume. The denser the air, the more mass it contains in a given volume.
- The weight of an object is the force exerted on it due to gravity. The weight of air is determined by its mass.
- Since the air near the Earth's surface has a higher density, it also has a higher mass per unit volume, resulting in a higher weight.
Conclusion
- In conclusion, the air closer to the Earth's surface is heavier because of the gravitational forces acting on it.
- These forces cause the air molecules to be pulled towards the Earth, creating higher atmospheric pressure and denser air near the surface.
- Understanding the effects of gravity on the atmosphere is important for studying weather patterns, air circulation, and other atmospheric phenomena.
- The reason why air closer to the Earth's surface is heavier is due to the gravitational forces acting on it.
- Gravity is a force that pulls objects towards the center of the Earth. It is responsible for keeping the atmosphere in place.
- The force of gravity is stronger closer to the Earth's surface and weaker as you move further away from it.
- As a result, the air molecules near the surface experience a greater gravitational force compared to those in the upper atmosphere.
Effect of gravitational forces on air
- The gravitational force causes the air molecules to be pulled towards the Earth's surface, creating pressure.
- This pressure is known as atmospheric pressure and it decreases with increasing altitude.
- The weight of the air above a certain point in the atmosphere creates pressure at that point.
- Therefore, the air closer to the Earth's surface experiences a higher atmospheric pressure compared to the air in the upper atmosphere.
Density and weight of air
- The air near the Earth's surface is denser compared to the air in the upper atmosphere.
- Density is the mass of an object per unit volume. The denser the air, the more mass it contains in a given volume.
- The weight of an object is the force exerted on it due to gravity. The weight of air is determined by its mass.
- Since the air near the Earth's surface has a higher density, it also has a higher mass per unit volume, resulting in a higher weight.
Conclusion
- In conclusion, the air closer to the Earth's surface is heavier because of the gravitational forces acting on it.
- These forces cause the air molecules to be pulled towards the Earth, creating higher atmospheric pressure and denser air near the surface.
- Understanding the effects of gravity on the atmosphere is important for studying weather patterns, air circulation, and other atmospheric phenomena.
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Air closer to the Earth’s surface is heavier because of a) Gravitational forces acting on airb) Jet air circulation in the upper atmospherec) Cloudiness near equator and polesd) Higher air pressure in stratosphereCorrect answer is option 'A'. Can you explain this answer?
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Air closer to the Earth’s surface is heavier because of a) Gravitational forces acting on airb) Jet air circulation in the upper atmospherec) Cloudiness near equator and polesd) Higher air pressure in stratosphereCorrect answer is option 'A'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Air closer to the Earth’s surface is heavier because of a) Gravitational forces acting on airb) Jet air circulation in the upper atmospherec) Cloudiness near equator and polesd) Higher air pressure in stratosphereCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Air closer to the Earth’s surface is heavier because of a) Gravitational forces acting on airb) Jet air circulation in the upper atmospherec) Cloudiness near equator and polesd) Higher air pressure in stratosphereCorrect answer is option 'A'. Can you explain this answer?.
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