Standard Science Primary 5 Cycles

Siti placed two identical towels, A and B, with the same amount of water under the sun. Towel A was folded into a small square, while Towel B was spread out. Which towel will dry faster and why?

A Towel B, because it is thinner than Towel A.
B Towel A, because it has a smaller exposed surface area.
C Towel B, because it has a larger exposed surface area.
D Both will dry at the same time as they are under the same sun.
Show Worked Solution

Worked Solution

Step 1: Identify the variable (Exposed surface area). Step 2: Recall that a larger exposed surface area increases the rate of evaporation. Step 3: Towel B is spread out, so it has more surface area exposed to the sun and air.

Correct answer: Towel 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