Phy Sci chapter fourteen Flashcards
Convection
The movement of matter due to differences in density that are amused by temperature variations
Thermal conduction
The transfer of energy as heat through a material
Convection current
Any movement of matter that results from differences in density; may be vertical, circular, or cyclical
Radiation
The energy that is transferred as electromagnetic waves, such as visible light and infrared waves
Conductor
Material through which energy can be easily transferred as heat
EX.) metal
EX.) cooking pans
Insulator
Material that transfers energy poorly
EX.) insulation in walls&houses to keep heat from leaving
EX.) part of clothing
Specific heat
That quantity of heat required to raise a unit mass of homogenous material 1K or 1°C in a specified way given constant pressure and volume
Conduction
Occurs between objects in direct contact
Celsius to Fahrenheit
F = 1.8 x C + 32.0
Fahrenheit to Celsius
C = F - 32.0
- --------
1. 8
Absolute zero
EQUAL TO -273.16°C
the temp of outer space is very close to this
an object can NEVER reach absolute zero
basis for the Kelvin scale
the particles in this temp stop all movement which is impossible
Celsius to Kelvin
K = C + 273.16
Energy transfer
Energy moves from the object with a higher temperature to an object at a lower temperature
This occurs when two objects are touching, and energy moves from one object to the other
Thermodynamics
The study of how energy moves and changes in different situations
First law of thermodynamics
The total energy in any process always remains the same
