| A | B |
|---|
| Heat | -form of energy caused by the internal motion of particles of matter. |
| Molecules | -tiny particles of matter that is always in motion. |
| Energy | -active strength or force;heathy power.(energy is measured in joules. |
| Matter | -the material of which something is made or composed; substance. |
| Heat transfer | -movement of heat from a warmer object to a cooler one. |
| Conduction | -substance that transfers heat more easily and rapidly than other substance. |
| Convection | -heat transfer in liquids and gases by means of the movement of molecules from one place to another. |
| Radiation | -heat transfer through space. |
| Kinetic energy | -energy that a moving object has due to its motion; energy of motion. |
| Celsius scale | -metric temperature scale on which water freezes at 0c and boils at 100c. |
| Kelvin Scale | -metric temperature scale on which O K repreasents absulute zero, the freezing point of water is 273K, and boiling point of water is 373K. |
| Absolute zero | -temperature at which all moleculer motion ceases; lowest possible temperature(OK-373) |
| Specific heat | -ability of a substance to absorb heat energy. |
| Catorimeter | instrument used to measure the heat given off in a chemical reactions. |
| Potenial energy | -energy stored in a substance. |
| Phase change | -change of matter from one phase(solid,liquid,gas) to another. |
| Heat of fusion | -amount of heat needed to chang a substance from the solid phase to the liquid phase. |
| Heat of vaporization | -amount of heat needed to change a substance from the liquid phase tho a gas phase. |
| Freezing point | -temperature at which a substance changes from liquid to a solid phase. |
| Thermal expansion | -expansion of a substance due to heat. |
| Wave | -traveling disturbance that carries energy from one place to another. |
| Vibration | -movement that follows the same path over and over again. |
| Medium | -material through which a mechanical wave travels. |
| Mechanical wave | -wave that disturbs a medium. |
| Electromagnetic wave | -wave that consists of electric and magnetic fields anddoes not require a meduim to exist. |
| Amplitude | -greatest distance from rest of a wave. |
| Wavelength | -distance between two consecutive similar points on a wave. |
| Frequency | -number of waves that pass a certain point given amount of time. |
| Longitudinal wave | -wave in which the motion of the medium is parallel to the direction of the wave. |
