Standard Science Primary 5 Cycles

Siti poured 50ml of water into four different containers and left them in the same room. Which container will have the least amount of water left after two days?

A A covered plastic cup
B A tall, narrow test tube
C A wide, shallow plate
D A standard drinking glass
Show Worked Solution

Worked Solution

Step 1: The rate of evaporation depends on the exposed surface area of the water. Step 2: A larger exposed surface area allows more water molecules to escape as vapour. Step 3: A wide, shallow plate has the largest exposed surface area among the choices, so water will evaporate the fastest.

Correct answer: A wide, shallow plate

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free