Advanced Science Primary 4 Cycles

Jun Jie placed two identical wet towels under the sun. Towel A was folded in half, while Towel B was spread out completely. Which towel will dry faster and why?

A Both will dry at the same rate because they are identical.
B Towel A, because the heat is concentrated in the folds.
C Towel A, because it takes up less space.
D Towel B, because it has a larger exposed surface area.
Show Worked Solution

Worked Solution

Step 1: Identify the factor being tested: surface area. Step [2-9]: Evaporation is a surface phenomenon. More exposed surface area allows more water molecules to escape. Step [2-9]: Towel B is spread out, providing more surface area than folded Towel A.

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