Heat Transfer: Conduction, Convection, Radiation
What is Conduction?
Conduction is the direct heat transfer from one substance to another. conDuCtion= Direct Contact
What is Convection?
Convection is the direct heat transfer from a fluid. A fluid is either a liquid OR air
What is Radiation?
Transfer of heat energy through empty space. Often infrared WAVES
Matter
anything that has mass and takes up space
A pot sitting on a hot burner.
conduction
Ice melting in your hand.
conduction
Picking up a hot cup of coffee
conduction
Touching a metal spoon that is sitting in a pot of boiling water
conduction
Using a heating blanket to get warm
conduction
cooling a glass in an ice bucket
conduction
holding the handle of a pan
conduction
hot soup burning your tongue
conduction
Macaroni rising and falling in a pot of boiling water
convection
Putting your wet shoes on a floor vent to dry them faster
convection
air conditioner cooling a room
convection
boiling water
convection
cooking rice in water
convection
hot air balloon rising
convection
warm water on the surface of a lake and cold water at the bottom of the lake
convection
The law of conservation of energy states that _________ cannot be created or destroyed, it can only be transformed
energy
Temperature
measure of how hot or cold something is
A person placing their cold hands over a warm fire
radiation
A person placing their hand over a hot burner
radiation
Lying out in the sun to get a tan
radiation
Sun's light warming the Earth
radiation
The Sun.
radiation
a pan above the stove burner
radiation
feeling warm when you sit in sunlight
radiation
barbeque meat with charcoal (there's 2 types)
radiation for heat to reach the meat, conduction to cook it inside
heat (molecule movement) always moves from ______ to _______ (cooler to warmer OR warmer to cooler)
warmer to cooler--molecules always want to get cooler
