Heat Energy Flashcards
Conduction
thermal energy transferred via vibrations
Bad conductors are
good insulators
Gases are the worst
conductors, good insulators and transfer the least thermal energy per second
Solids are
good conductors, poor insulators
metals are
the best conductors and transfer the most thermal per second
What does the amount of energy transfer per second through a layer of insulating material depend on?
the temp difference across the material
thickness of material
thermal conductivity of the material
What does the temp rise depend on when a substance is heated?
the amount of energy supplied
the mass of the substance
what the substance is
What is specific heat capacity?
the amount of energy required to raise the temp of 1kg of substance by 1 degree
Storage heaters use elec at night to
heat bricks in the heater which emits the energy to keep the room warm
bricks have a lot of
shc so store lots of energy
convection
thermal energy transfer due to change in density of a FLUID causing convection currents to form
radiation
thermal energy transfer via infrared waves
