Question

Yami pours powdered cocoa mix into milk and stirs it. Then she microwaves the mixture for three minutes. When she takes the cup out, the handle is very warm. Steam rises from the cup, so she blows it before taking a sip. In which part of this scenario can convection be best observed?

A. stirring powdered cocoa mix into milk
B. touching the warm handle of the cup
C. rising steam from the cup of cocoa
D. blowing on the hot cocoa to cool it

Answer 1

Answer: Option (C) is the correct answer.

Explanation:

When molecules of a fluid move in such a way that hotter substance (less dense) rises to the top and cooler substance (more dense) sinks at the bottom. As a result, there occurs transfer of heat and this process is known as convection.

Therefore, when cocoa is mixed into milk and steam rises from it then rising steam from the cup of cocoa is a scenario which depicts convection because hot molecules are rising into the atmosphere or top.

Answer 2

Answer:

The answer to your question is C!

Have a good day!