Standard Science Primary 4 Cycles

What happens to the temperature of water vapour as it rises higher into the atmosphere?

A It increases.
B It remains the same.
C It fluctuates randomly.
D It decreases.
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Worked Solution

Step 1: As water vapour rises, it moves away from the Earth's surface. Step [2-9]: The air temperature at higher altitudes is lower. Step [2-9]: Therefore, the water vapour loses heat and its temperature decreases.

Correct answer: It decreases.

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