Multiple Choice
By definition, an ectotherm __________.
38. Animal Form and Function
Thermoregulation
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It is a cold day in the lecture hall. When you rest your arm on the cool laminated desktop at your seat, heat is transferred __________.
A
from your body to the desk by radiation
B
from the desk to your body by radiation
C
from the desk to your body by conduction
D
from the air to your body by convection
E
from your body to the desk by conduction
Verified step by step guidance1
Understand the concept of heat transfer: Heat can be transferred in three main ways - conduction, convection, and radiation.
Identify the type of materials involved: In this scenario, your body and the laminated desktop are in direct contact, which is important for determining the method of heat transfer.
Recognize the method of heat transfer: Conduction is the transfer of heat through direct contact between materials. Since your arm is resting on the desk, conduction is the likely method of heat transfer.
Determine the direction of heat flow: Heat naturally flows from a warmer object to a cooler one. Since your body is warmer than the cool desk, heat will transfer from your body to the desk.
Conclude the correct answer: Based on the understanding of conduction and the direction of heat flow, the heat is transferred from your body to the desk by conduction.
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