Physical Science Flashcards
Thermal Energy
Energy possessed within the object or system due to movement of the particles within the object or system.
Temperature
the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
Heat Transfer
the movement of thermal energy from one thing to another thing of different temperature.
Fahrenheit
of or denoting a scale of temperature on which water freezes at 32° and boils at 212° under standard conditions.
Celsius
of or denoting a scale of temperature on which water freezes at 0° and boils at 100° under standard conditions.
Kelvin
the SI base unit of thermodynamic temperature, equal in magnitude to the degree Celsius.
Conduction
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
Convection
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
Radiation
the transfer of thermal energy through thermal emission.
Solid
firm and stable in shape; not liquid or fluid.
Liquid
a substance that flows freely but is of constant volume, having a consistency like that of water or oil
Gas
a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid).
Conductor
a person who directs the performance of an orchestra or choir.
Insulator
a substance which does not readily allow the passage of heat or sound.
Conservation of Energy
a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.
