Chapter 13 Vocab Flashcards
Temperature
Temperature is a measure of how hot or cold something is.
Thermometer
A thermometer is an instrument that measures and indicates temperature.
Absolute zero
Absolute value is the temperature at which molecular energy is at a minimum (0 k on the Kelvin scale or -273.16 *C on the Celsius scale).
Heat
Heat is the energy transferred between objects that are at different temperatures.
Thermal conduction
Thermal conduction is the transfer of energy as heat through a material.
Convection
Convection is the movement of matter due to differences in density that are caused by temperature variations.
Convection current
A convection current is the vertical movement of air currents due to temperature variations.
Radiation
Radiation is energy transferred as heat in the form of electromagnetic waves.
Specific heat
Specific heat describes how much energy is required to raise an object’s temperature. It is defined as the quantity of heat required to raise a unit mass of homogenous material 1 K or 1*C in a specified way given constant pressure and volume. Energy=(specific heat) x (mass) x (temperature change)
Electromagnetic waves
The energy that is transferred as heat. They include infrared radiation, visible light, and ultraviolet rays.
Conductor
Any material through which energy can be easily transferred as heat is called a conductor.
Insulator
You can reduce energy transfer by using poor conductors called insulators.
Refrigerant
A refrigerant is a material used to cool an area or an object to a temperature that is lower than the temperature of the environment. During each operating cycle, the refrigerant evaporates into a gas and then condenses back into a liquid.
Heat engine
A heat engine is a machine that transforms heat into mechanical energy, or work.
