Thermal Dynamics Flashcards
what are SI units
base units that are used to obtain all other units
what are derived units
created by combining base units using algebra
si unit examples
length, mass, temperature, time, electric current, luminous intensity, amount of substance
derived unit examples
force, energy, speed
what is the first law of Thermodynamics
energy cannot be created or destroyed
heat
total kinetic energy in a substance
temperature
average kinetic energy of the molecules in a substance
kelvin to Celsius
kelvin +- 273 Celsius
solid to liquid
fusion
liquid to solid
freezing
liquid to gas
vaporisation
gas to liquid
condensation
gas to solid
deposition
solid to gas
sublimation
zeroth law of thermodynamics
if A=B and B=C then A=C
what are the different radiation on the electromagnetic spectrum
Radio waves, infa-red radiation, visible light, ultraviolet radiation, xrays, gamma rays
heat can be transferred by…
conduction, convection and radiation
conduction is…
the transfer of heat energy through collisions between particles
convection is…
the transfer of heat energy through the movement of particles of different temperatures
poor conductors are called
insulators
radiation is…
the transfer of heat through electromagnetic radiation
λmax represents…
the wave length at which the most energy is emitted for a substance at a certain temperature
the higher the temperature of a substance the … its wave length
shorter and higher energy its wave lengths produced
power is…
the amount of energy emitted per second
internal energy
total energy, kinetic + potential
