WAEC Physics 2024 Objective — Question 35

Question 35 of 50 from the West African Examinations Council (WAEC) Physics 2024 Objective paper, with the correct answer and a full explanation.

35. Atmospheric pressure decreases with an increase in altitude because A.

A. acceleration due to gravity increases with altitude.
B. temperature increases with altitude.
C. internal energy increases with altitude.
D. interaction among air molecules decreases due to less quantity of air.Correct

Explanation

At higher altitudes, there is less air above a given point exerting downward pressure. As a result, the weight of the air column is less, leading to a lower atmospheric pressure.

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