Thermal Energy & Heat Transfer Advanced Physical Science

Kinetic Energy Energy of ________________ KE = _________________ Pretend you are a particle and jump around The more you jump around…the more _______ you have All matter contains _________that are ___________all the time Absolute zero=when matter ______ _______ (never been reached)

Temperature Temperature is the measure of the ______ _______ energy of the particles in an object. The gas particles on the right have a _______ KE than those on the left (therefore higher ______________)

Temperature (con’t) Temperature does NOT depend on how much _________you have The contents of the teapot and the coffee cup are at the same temperature

Thermal Energy Definition: The _______ ________ _________ of all the particles that make up the object More _______ = More total Kinetic Energy or… The more _________ present, the greater the thermal energy Ex: there is more thermal energy in the ______ than the _______ Also, the higher the ___________ the higher the thermal energy

Heat Definition: The energy ___________ between objects that are at _________temperatures (different Ave ______ _______). Energy is transferred from _______ (warmer) molecules to ________ (cooler) molecules Occurs through __________ between molecules ________ MOVES!! (not ______) ___________ is what causes something to FEEL hot or cold Ex: A doctor’s stethoscope on your back…your body heat is moving to the stethoscope.

Heat Transfer-3 types ________

Heat Transfer - Conduction Conduction- transfer of energy through matter by the _____ _______ of particles When objects that have different temperatures come into contact, energy passes from ______ to _________object until both have same _____________. Occurs because _______ are in constant _____ KE _______as particles _________

Heat Transfer – Conduction (cont) Conduction can also occur _________an object such as the spoon (below). The part of the spoon in the soup is __________ than the edge. Conduction works best in _________- especially _________- because particles are close together _________- good conductors-because ________ move easily & transfer ________ __________ to nearby particles

Heat Transfer - Convection Convection- transfer of thermal energy by the ___________ (or ___________) of a fluid Fluid- any material that ___________ (can be ________ or _________) Convection currents transfer heat from ____________ to __________ parts of a ____________________

Conduction and Convection Convection vs. Conduction- Conduction involves _________ and transfers of energy. Convection involves _________ of the energetic particles from one __________ to another Conduction and convection can occur only when ____________ is present.

Heat Transfer - Radiation Radiation is heat transfer through _________ as ____________ _____________. Does not require a ___________

Heat Transfer-summary of all types Conduction, Convection, and Radiation can occur in the same situation