Advanced Science Primary 4 Energy

Tim placed a metal spoon and a plastic spoon into a bowl of hot soup at 90°C. After 5 minutes, he touched both. Which statement is correct?

A The metal spoon is cooler because it loses heat to the air faster.
B Both spoons are at 90°C because they are in the same soup.
C The plastic spoon is hotter because it is a good conductor of heat.
D The metal spoon is hotter because it conducts heat from the soup faster.
Show Worked Solution

Worked Solution

Step 1: Metal is a good conductor of heat. Step [2-9]: It allows heat from the soup to travel through it quickly to Tim's hand. Step [2-9]: Plastic is a poor conductor and heat travels through it slowly.

Correct answer: The metal spoon is hotter because it conducts heat from the soup faster.

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

Start Free Trial — 7 Days Free