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Force/Thermal Energy
*7.7ABCD, 7.8ABC Force and Motion + Thermal Energy
| Term | Definition |
|---|---|
| displacement | length of a straight line between two points |
| distance | total length of the path actually taken from Point A to Point B |
| speed | how fast an object is moving at a specific moment in time; s=d/t |
| velocity | speed in a specific direction |
| uniform motion | motion of an object with a velocity that does not change |
| slope | Steepness of a graph at a given point |
| force | a push or a pull |
| inertia | tendency of an object to remain stationary or to remain in motion |
| unbalanced force | a force on an object that is not canceled by other forces |
| balanced forces | forces of equal magnitude but in opposite directions acting on the same object |
| magnitude | size or importance |
| average speed | total distance divided by total time taken over an entire journey |
| distance-time graph | line graph used to show the speed of a moving object |
| acceleration | rate of change of velocity |
| constant speed | moving at a steady rate over time |
| motion | object's change in position relative to a reference point |
| origin | fixed point from which motion begins |
| x-axis | horizontal line on a graph |
| y-axis | vertical axis on a graph |
| temperature | a measure of the average kinetic energy of an object's particles |
| thermal energy | sum of the kinetic energies of all the particles that make up an object |
| thermal expansion | tendency of particles to spread out when the kinetic energy increases |
| conduction | transfer of thermal energy by direct contact of two objects or portions of matter |
| thermal conductor | substances that thermal energy can easily move through |
| thermal insulator | substances that thermal energy cannot move through |
| convection | a type of thermal energy transfer in which currents carry thermal energy from one part of the fluid to another |
| radiation | the process of thermal energy transfer by electromagnetic waves |
| hypothermia | condition caused by the loss of too much body heat |
| thermal equilibrium | state in which all parts of a system are at the same temperature |
| law of conservation of energy | energy can neither be created nor destroyed; energy just changes form |
| kinetic energy | form of energy that an object possesses due to its motion |
| heat | energy transferred from one object to another as the result of a difference in temperature |
| thermodynamics | branch of physics that helps to understand how heat and energy move and change |
| heat transfer | when warm things give their heat to cold things until they are all the same temperature |
Created by:
trauberk
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