Standard Science Primary 5 Cycles

Tim poured 100 ml of water into two different containers and placed them under the hot sun. After 2 hours, which setup will have less water remaining, and why?

A Setup B, because the beaker is taller.
B Setup B, because it has a larger exposed surface area.
C Setup A, because it has a narrower opening.
D Setup A, because the water is deeper.
Show Worked Solution

Worked Solution

Step 1: Both setups have the same amount of water and are exposed to the same heat source (hot sun). Step 2: Setup B has a wider opening, meaning the water has a larger exposed surface area. Step 3: A larger exposed surface area increases the rate of evaporation. Step 4: Therefore, more water will evaporate from Setup B, leaving less water remaining.

Correct answer: Setup B, because it has a larger exposed surface area.

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

Start Free Trial — 7 Days Free