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Science Unit 2
Vocabulary
20
Science
7th Grade
02/22/2016

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Term
Potential Energy
Definition
object's stored energy, due to its position; energy that is stored and held in readiness.
Term
radiation
Definition
energy that is sent out in waves; energy that comes from a source and travels through some material or through space
Term
Thermal Energy
Definition
power created in the form of heat; total energy of the particles in an object
Term
transfer
Definition
to be moved from one place to another; to change from one point to another
Term
Mechanical Energy
Definition
potential and kinetic energy in a system associated with the motion or position of an object
Term
Kinetic Energy
Definition
energy that an object has due to its motion
Term
heat transfer
Definition
heat that moves from one body or substance to another by radiation, conduction, and convection or a combination of these methods.
Term
heat insulator
Definition
a material that does not easily transfer heat between its particles
Term
heat
Definition
thermal energy that is transferred from one substance to another
Term
fluid
Definition
a substance suh as a liquid in which particles can move past one another
Term
expansion
Definition
an increase in the volume of a substance while its mass remains the same
Term
equilibrium
Definition
the state of a body or object that is at rest or in constant and unchanging motion
Term
electricity
Definition
an electric current or charge; a flow of electrical charges, such as electrons through a conductor
Term
Electrical Energy
Definition
the energy of moving electric charges
Term
circuit
Definition
closed unbroken path through which an electric current can flow
Term
convection current
Definition
a current caused by the rising of heated fluid and sinking of cooled fluid in a circular motion
Term
convection
Definition
transfer of heat by the circulation of movement of currents within a fluid
Term
contraction
Definition
the act of reducing
Term
conductor
Definition
material that can transfer heat between its particles easily
Term
conduction
Definition
transfer of heat or energy through matter or between particles within a substance
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