Heat Transfers Flashcards
What is conduction?
Conduction is the transfer of heat through a material without the movement of the material itself.
True or False: Conduction occurs best in gases.
False
Fill in the blank: In conduction, heat energy is transferred through ________ of particles.
collisions
What is convection?
Convection is the flow of heat energy from a region of high temperature to a region of low temperature by movement of a fluid
Multiple Choice: Which of the following is an example of convection? A) A metal spoon in a hot pot B) Warm air rising C) Ice melting
B) Warm air rising
True or False: Convection can occur in solids.
False
What is radiation?
Radiation is the transfer of heat energy by electromagnetic waves without involving particles
Fill in the blank: The sun warms the Earth through ________.
radiation
Multiple Choice: Which method of heat transfer does not require a medium? A) Conduction B) Convection C) Radiation
C) Radiation
What is the primary method of heat transfer in liquids?
Convection
True or False: Metals are good conductors of heat.
True
Fill in the blank: The process of warm air rising and cool air sinking is called ________.
convection currents
What is an example of conduction?
A metal rod heated at one end.
Multiple Choice: Which of the following materials is a poor conductor of heat? A) Copper B) Wood C) Aluminum
B) Wood
What happens to the particles in a substance when it is heated?
They gain energy and move faster.
True or False: Convection can only occur in liquids.
False
Fill in the blank: ________ is the only method of heat transfer that can occur in a vacuum.
Radiation
What is the term for the upward movement of warm air in convection?
Rising
Multiple Choice: Which type of heat transfer would be involved in cooking food in an oven? A) Conduction B) Convection C) Radiation
B) Convection
What is the main factor that affects the rate of conduction?
The material’s thermal conductivity.
