heat transfer Flashcards
law of conservation of energy
Energy cannot be created or destroyed just transformed (under normal conditions)
heat
Thermal energy that flows due to a difference in temperature. Heat flows from hot to cold
Heat tansfer
a method by which heat flows (conduction, convection, radiation).
conduction
heat transfer within or between solid objects.
convection
heat transfer into or out of fluids.
radiation
heat transfer due to packets of energy called photons that can travel through many substances, even empty space.
insulator
a material through which energy cannot be easily transferred.
Conductor
A material through energy can be easily transferred.
temperature
The measure of the average speed of all particles
thermal energy
The total energy of all particles in an object.
cell wall
A rigid structure that surrounds the cell membrane
Cell membrane
The membrane that protects the cell
Lysosome
breaks down worn-out or damaged organelles waste materials, and foreign invaders
Ribosomes
makes proteins
rough ER
Synthesizes and packages proteins, and transports materials through the cell
