Conduction, Convection + Radiation Flashcards
(20 cards)
What is conduction?
The transfer of heat through a material without the movement of the material itself.
True or False: Conduction occurs in fluids.
False
What is the primary mechanism of heat transfer in solids?
Conduction
Fill in the blank: In conduction, heat is transferred through _____ collisions between particles.
molecular
What is convection?
The transfer of heat through the movement of fluids (liquids or gases).
True or False: Convection can occur in solids.
False
What drives convection currents in a fluid?
Differences in temperature and density.
Fill in the blank: In convection, warmer fluid rises while _____ fluid sinks.
cooler
What is radiation?
The transfer of heat through electromagnetic waves.
True or False: Radiation requires a medium to transfer heat.
False
What type of heat transfer is involved in the warming of the Earth by the Sun?
Radiation
Multiple Choice: Which of the following is a good conductor of heat? (A) Wood (B) Metal (C) Air
B) Metal
What is the term for the process by which heat is transferred through direct contact?
Conduction
Fill in the blank: The efficiency of heat transfer by conduction depends on the material’s _____.
thermal conductivity
Multiple Choice: Which of the following is NOT a method of heat transfer? (A) Conduction (B) Convection (C) Compression
C) Compression
What is a common example of convection?
Boiling water
True or False: All objects emit radiation.
True
Fill in the blank: The transfer of heat through radiation occurs at the speed of _____ in a vacuum.
light
What is the term for the upward movement of warm air in a room?
Convection
What is the main difference between conduction and convection?
Conduction transfers heat through direct contact, while convection involves the movement of fluid.
