5-Heat transfer UPDATED ACTUAL Exam
Questions and CORRECT Answers
In which direction does heat naturally move? - CORRECT ANSWER - From hot objects
to cold ones
How does heat move in solids - CORRECT ANSWER - Through particles bumping into
each other and sharing energy
How does heat move in liquids and gases? - CORRECT ANSWER - By fluid motion that
carries heat (convection)
What affects how fast heat moves through materials? - CORRECT ANSWER - Material
type and thickness
What is heat conduction - CORRECT ANSWER - Trasfer of thermal energy through a
solid due to temeprature difference
How does heat conduction happen? - CORRECT ANSWER - Vibrating atoms pass energy
to neighbors
k - CORRECT ANSWER - thermal conductivity - how well a material conducts heat.
Steady-state - CORRECT ANSWER - Temeprature at each point doesn't change over time
Heat convection - CORRECT ANSWER - Heat transfer between a surface and a moving
fluid
What two things combine in convection - CORRECT ANSWER - fluid motion and
thermal energy transfer
Questions and CORRECT Answers
In which direction does heat naturally move? - CORRECT ANSWER - From hot objects
to cold ones
How does heat move in solids - CORRECT ANSWER - Through particles bumping into
each other and sharing energy
How does heat move in liquids and gases? - CORRECT ANSWER - By fluid motion that
carries heat (convection)
What affects how fast heat moves through materials? - CORRECT ANSWER - Material
type and thickness
What is heat conduction - CORRECT ANSWER - Trasfer of thermal energy through a
solid due to temeprature difference
How does heat conduction happen? - CORRECT ANSWER - Vibrating atoms pass energy
to neighbors
k - CORRECT ANSWER - thermal conductivity - how well a material conducts heat.
Steady-state - CORRECT ANSWER - Temeprature at each point doesn't change over time
Heat convection - CORRECT ANSWER - Heat transfer between a surface and a moving
fluid
What two things combine in convection - CORRECT ANSWER - fluid motion and
thermal energy transfer
