A student holds an ice cube in her hand. Which of the following BEST describes the movement of heat that will happen?
A
Heat will flow from her hand to the ice cube via conduction.
B
Cold will flow from the ice cube to her hand via conduction.
C
Heat will flow from her hand to the ice cube via radiation.
D
Cold will flow from the ice cube to her hand via convection.
B
Cold will flow from the ice cube to her hand via conduction.
The correct answer is A. Heat will flow from her hand to the ice cube via conduction. Conduction is the transfer of heat through direct contact between two objects at different temperatures. In this case, since the student's hand is warmer than the ice cube, heat will transfer from the hand to the ice cube.
The correct answer is A - Heat will flow from her hand to the ice cube via conduction.
To understand why, let's break down the options:
Option B suggests that cold will flow from the ice cube to her hand via conduction. However, cold is not a substance that can flow. Instead, heat always flows from warmer objects to cooler objects.
Option C suggests that heat will flow from her hand to the ice cube via radiation. While radiation is a method of heat transfer, it is typically associated with the transfer of heat through electromagnetic waves (e.g., infrared radiation). In this scenario, since the student is holding the ice cube, direct contact is established between her hand and the ice cube. Therefore, conduction (the transfer of heat through physical contact) is the primary method of heat transfer.
Option D suggests that cold will flow from the ice cube to her hand via convection. Convection involves the transfer of heat through the movement of fluids, such as air or liquids. In this scenario, there is no mention of any fluid motion, so convection is not the dominant method of heat transfer.
Consequently, the correct answer is A: Heat will flow from her hand to the ice cube via conduction.