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energy
energy and thermal energy chapters
30
Science
9th Grade
02/15/2007

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Term
Energy
Definition
the abilty to do work
Term
work
Definition
a transfer of energy
Term
Kinetic energy
Definition
energy of motion
Term
Gravitational potential energy
Definition
potential energy that depends upon an objects height
Term
Elastic potential energy
Definition
potential energy of an object that is streched or compressed
Term
Mechanical energy
Definition
energy associtated with the motin and position of every day objects
Term
Thermal energy
Definition
total potential and kenetic energy of all the microscopic particles in an object
Term
chemical energy
Definition
energy stored in chemical bonds
Term
electrical energy
Definition
energy associted with electric charges
Term
Eletromagnetic energy
Definition
a form energy that travles through space in the form of waves
Term
nuclear energy
Definition
energy stored in atomic nuclei
Term
energy conversion
Definition
the process of changing energy from one form to another
Term
nonrenewable energy resourses
Definition
oil, natural gas, coal, and uranium
Term
hydroelectric energy
Definition
energy obtained from flowing water
Term
solar energy
Definition
sunlight that is converted into usable energy
Term
geothermal energy
Definition
thermal energy beneath earth's surface
Term
Biomass energy
Definition
chemical energy stored into thermal energy
Term
energy conservation
Definition
finding ways to use less energy or to use energy more effciently
Term
heat
Definition
transfer of thermal energy from one object to another because of temperature differance
Term
temperature
Definition
a measure of how hot or cold an object is compared to a reference point
Term
Thermal expansion
Definition
the increase in volume of a material due to a temperature increase
Term
specific heat
Definition
the amount of heat needed to raise the temperature of one gram of a material by one degree celsius
Term
conduction
Definition
the transfer of thermal energy with no overall transfer of matter
Term
thermal conductors
Definition
material that conducts thermal energy well
Term
thermal insulator
Definition
material that conducts thermal energy poorly
Term
convection
Definition
the transfer of thermal energy when particles of a fluid move from one place to another
Term
convection current
Definition
occurs when a fluid circulates in a loop as it alternately heats up and cools down
Term
radiation
Definition
transfer of energy by waves moving through space
Term
thermodynamics
Definition
the study of conversions between thermal energy and other forms of energy
Term
heat engine
Definition
any device that converts heat into work
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