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Heat Transfer

Convection, Conduction, and Radiation

QuestionAnswer
Heat from the sun radiation
Absorption of electromagnetic waves of the sun radiation
Metal seat buckle becomes too hot to touch conduction
Water boiling convection
Is wood an insulator or conductor? insulator
Is metal an insulator or conductor? conductor
Cool air ________________, and warm air ___________________. sinks, rises (convection)
How a stove heats conduction
How a microwave heats radiation
Conduction Heat energy is transferred when molecules within a substance collide.
Requires no medium for transfer radiation (electromagnetic waves)
Convection Heat is transferred because of density differences.
Conduction is the transfer of heat energy by ______________. molecular contact (direct contact)
Radiation Heat energy is transferred in waves.
Energy transferred through a fluid or gas where hot rises and cold sinks. convection
Another name for heat energy thermal energy
The amount of heat energy transferred depends on ___________________. the difference in temperature between the objects.
The amount of heat energy transferred depends on ___________________. warmer, cooler
Occurs most easily in liquid and solids conduction
Conductor transfers thermal energy very well
Insulator does not transfer thermal energy very well
Good conductors silver, metal, gold, nickel, copper
Good insulators plastic, wood, paper, rubber, glass
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