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| 13869731675 | Thermodynamics | The study of heat. | 0 | |
| 13869731676 | Kinetic-molecular Theory | In a hot body the particles move faster and thus have greater kinetic energy than particles in a cooler body. | 1 | |
| 13869731677 | Thermal Energy | The overall energy of motion of the particles that make up an object. | 2 | |
| 13869731678 | Temperature | The hotness of an object. It represents the average kinetic energy of particles in a object. | 3 | |
| 13869731679 | Heat | The energy that flows between two objects as a result of a temperature difference. | 4 | |
| 13869731680 | Thermal equilibrium | When the rate of transfer of thermal energy between two objects is equal. | 5 | |
| 13869731681 | Thermometer | A device that measures temperature. It relies on thermal expansion of a fluid in a sealed tube. | 6 | |
| 13869731682 | Absolute zero | The temperature at which particles have zero kinetic energy. That is, particles stop moving. Its equal to -273 degrees Celsius. | 7 | |
| 13869731683 | Convection | The transfer of thermal energy in a fluid. | 8 | |
| 13869731684 | Radiation | The transfer of thermal energy through empty space. | 9 | |
| 13869731685 | Specific Heat | The amount of energy that must be added to raise the temperature of a unit of mass one temperature unit. |  | 10 |
| 13869731686 | Calorimeter | A device used to measure changes in thermal energy. | 11 | |
| 13869731687 | Q | Variable for heat energy | 12 | |
| 13869731689 | T | Variable for temperature | 13 | |
| 13869731692 | Fahrenheit | The temperature scale on which water freezes at 32 degrees and boils at 212 degrees | 14 | |
| 13869731693 | Celsius | Metric unit for measuring temperature; On this scale water freezes at zero and boils at 100. | 15 | |
| 13869731694 | Kelvin | A unit of absolute temperature and symbolized as K. Formerly known as degree Kelvin. | 16 | |
| 13869731695 | linear expansion | when an object stretches due to heat | 17 | |
| 13869731697 | area expansion | The change in the area of a solid as a result of temperature change | 18 | |
| 13869731699 | Joule (J) | SI unit of heat and energy | 19 | |
| 13869731700 | phase change | A reversible physical change that occurs when a substance changes from one state of matter to another. | 20 | |
| 13869731701 | fusion | the change of state when a liquid becomes a solid | 21 | |
| 13869731702 | heat of vaporization / heat of condensation | the energy required to change a substance from a liquid to a gas (or a gas to a liquid) at its boiling point / condensing point. | 22 | |
| 13869731703 | vaporization | The change of state from a liquid to a gas | 23 | |
| 13869731704 | calorimeter | an insulated device used to measure the absorption or release of heat in chemical or physical processes |  | 24 |
| 13869731705 | heat transfer / heat flow | the movement of energy from a warmer object to a cooler object | 25 | |
| 13869731706 | thermal conduction | the transfer of heat by the direct contact of particles of matter. | 26 | |
| 13869731707 | thermal conductor | a material that conducts thermal energy well | 27 | |
| 13869731708 | thermal insulator | a material that conducts thermal energy poorly | 28 | |
| 13870058093 | heat of fusion | the energy required to change a substance from solid to liquid (or a liquid to a solid) at its melting point / solidifying point | 29 | |
| 13870112676 | melt | change from a solid to a liquid | 30 | |
| 13870117119 | condense | The change from a gas to a liquid | 31 | |
| 13870164811 | latent heat | heat absorbed or radiated during a change of phase at a constant temperature and pressure | 32 |
