heat transfer Flashcards
describe temperature
temperature is the measurement of the degree of hotness of an object
what is temperature scale?
used to say how high or low a temperature is
describe heat
the flow of thermal energy from one object to another
what are the 3 ways thermal energy can be transferred
conduction
convection
radiation
what is the best radiator/absorber?
black and matte because it abosrbs heat best
describe conduction
in conduction, thermal energy is transmitted for warmer area to colder area by the vibration of the atoms
what is 100°C in Kelvin?
373K
what is 0 °C in °F?
32 °F
what is 32°F in kelvin?
273K
where does conduction occurs at?
solid
where does convection occurs at?
liquid, gas
where does radiation occurs at?
vacuum
what is the worst radiator/absorber?
white, shiny as it absorbs heat worst
difference between heat and temperature
temperature is the measurment of the degree of hotness
Heat is the energy that transfer from hot region to cold region.
373K in F
212
what is convection?
used to speed up heat transfer
why is a vacuum needed?
to prevent conduction and convection
