Unit 3 Terminology HT1 Flashcards
Thermodynamics
the study of heat.
Energy
something that has the ability to do work.
Kinetic Molecular Theory
a theory that describes matter based on the assumption that all matter is made up of tiny particles that are constantly in motion.
Thermal Energy
the total energy (kinetic and potential) possessed by the particles moving in an object.
Heat
the thermal energy transferred from one object to another. Caused by differences in temperature between substances.
Conduction
energy is passing onto particles by bumping into each other.
Convection
When a substance is heated particles rise because they are less dense. Rising particles create a current which pushes cool particles down.
Radiation
the transfer of heat through electromagnetic waves, not matter.
Temperature
the hotness of an object measured on a specific scale.
Thermal Equilibrium
two objects become the same temperature.
Celcius
Calibrated to the properties of water.
Kelvin
Calibrated to the properties of energy.
Absolute Zero
the coldest possible temperature. When there is no energy left in the substance.
Thermal Expansion
objects heat up as they expand.
Linear Expansion
when a straight object expands, the length expands.
