Standard Science Primary 4 Energy

Jun Jie measured the temperature of boiling water and then let it cool for 30 minutes. Which thermometer reading represents the water after cooling?

A 110°C
B 100°C
C 30°C
D 0°C
Show Worked Solution

Worked Solution

Step 1: Boiling water is at 100°C. Step 2: Cooling for 30 minutes will bring the temperature down toward room temperature (approx 25-30°C). Step 3: 30°C is a realistic reading for cooled water.

Correct answer: 30°C

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

Start Free Trial — 7 Days Free