Vocab

=Section 1=

Temperature: a measure of the average kinetic energy of the particles of an object. Thermal Energy: the sum of the kinetic and potential energy of all the particles in an object. Heat: thermal energy that flows from something at a higher temperature to something at a lower temperature. Specific Heat: the amount of heat that is needed to raise the temperature of 1 kg of some material by 1°C.

=Section 2=

Conduction: the transfer of thermal energy by collisions between particles in matter. Convection: the transfer of thermal energy in fluid by the movement of warmer and cooler fluid from place to place. Radiation: the transfer of enerdy by electromagnetic waves. Insulator: a material in which heat flows slowly. =Section 3=

Solar Collector: panels that absorb radiant energy from the sun. Thermodynamics: thermal energy, heat, and work are related,and the study of the relationship among them. First Law of Thermodynamics: the increase in thermal energy of a system equals the work done on the system plus the heat transferred to the system. Second Law of Thermodynamics: it is impossible for heat to flow from a cool object to a warmer object unless work is done. Heat Engine: a device that converts heat into work. Internal Combustion Engine: fuel is burned inside the engine in chambers of cylinders.