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ch 10 PS HRW
ch 10 PS HRW
16
Physics
8th Grade
09/17/2007

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Term
absolute zero
Definition
the temperature at which molecular energy is at a minimum
Term
changes of state
Definition
the physical changes of matter one state to another
Term
thermal conduction
Definition
the transfer of energy as heat through a material
Term
thermal conductor
Definition
a material that easily transfers heat between its particles
Term
convection
Definition
the transfer of thermal energy (heat) by the circulation or movements of a liquid or gas
Term
heat
Definition
the energy that is transferred from one substance to another that are at different temperatures
Term
thermal insulater
Definition
a material that does not easily transfer heat between its particles
Term
radiation
Definition
the transfer by electromagnetic waves
Term
specific heat
Definition
the amount of heat required to raise the tempeture of one kilogram of a substance by one kelvin
Term
state of matter
Definition
the three physical forms (solid, liquid, and gas) in which matter exists
Term
temperature
Definition
the measure of the average kinetic energy of the particles in a substance
Term
thermal expansion
Definition
the expansion of matter when it is heated
Term
heat engine
Definition
a machine that transforms heat into mechanical energy, or work
Term
insulation
Definition
a substance that reduces the transfer of electricity, heat, or sound
Term
thermal energy
Definition
the kinetic energy of a substance's atoms
Term
thermal pollution
Definition
a temperature increase in a body of water that is caused by human activity tand that has a harmful effect on water quality and on the ability of that body of water to support life
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