Standard Science Primary 5 Cycles

Which of the following would DECREASE the rate of evaporation of water from a beaker?

A Increasing the humidity of the surrounding air.
B Increasing the exposed surface area.
C Increasing the temperature of the water.
D Increasing the wind speed.
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Worked Solution

Step 1: Evaporation is the change from liquid to gas. Step 2: High humidity means the air already has a lot of water vapour. Step 3: This makes it harder for more water molecules to evaporate into the air.

Correct answer: Increasing the humidity of the surrounding air.

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