The approximate average height of the troposphere is roughly 14 km. This height varies significantly depending on the latitude and the season. It is much higher at the equator, reaching up to 18 km, while it is considerably lower at the poles, often descending to around 8 km. The 14 km figure represents a global mean value for meteorologists. ANSWER: (D) 14 km
What is the approximate average height of the troposphere from the Earth’s surface? (A) 18 km (B) 22 km (C) 8 km (D) 14 km
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The troposphere’s height is not uniform across the globe; it is influenced by temperature and the Earth’s rotation. At the equator, warm air expands, pushing the troposphere to a maximum height of about 18 km. Conversely, at the poles, the cold, dense air keeps the layer much shallower, around 8 km. Taking these variations into account, the global average height is approximately 14 km. This layer is critical because it contains 80% of the atmosphere’s mass and almost all its water vapor, making it the primary theater for all terrestrial weather events and life.
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