rate of change in velocity, usually expressed in meters per
second; involves an increase or decrease in speed and/or a
change in direction
What is acceleration
100
force of air on moving objects
What is air resistance
100
in any periodic function (e.g., a wave) the maximum
absolute variation of the function
What is amplitude
100
the smallest unit of a chemical element that can still retain
the properties of that element
What is atom
100
unit of energy; the amount of heat needed to raise one gram
of water one degree Celsius at standard atmospheric
pressure
What is calorie
200
a physical change that occurs when matter changes to
another state (i.e., liquid, gas, or solid)
What is change of state
200
a reaction or a change in a substance produced by
chemical means that results in producing a different
chemical
What is chemical change
200
an interconnection of electrical elements forming a
complete path for the flow of current
What is circuit
200
a substance made up of a combination of two or more
elements held together by chemical bonds that cannot be
separated by physical means
What is compound
200
the process of changing from a gas (i.e., water vapor) to a
liquid (i.e., dew); the act of making more dense or compact
What is condensation
300
the transmission of heat through a medium and without the
motion of the medium
What is conduction
300
a fundamental principle stating energy cannot be created
nor destroyed but only changed from one form to another
What is conservation of energy
300
heat transfer in a gas or liquid by the circulation of currents
from one region to another
What is convection
300
the peak or highest point on a wave
What is crest
300
concentration of matter of an object; number of individuals
in the same species that live in a given area; the mass per
unit volume of a substance in a given area
What is density
400
factor being measured or observed in an experiment
What is dependent variable
400
the change in direction of a wave caused by passing by an
obstacle or traveling through an opening
What is diffraction
400
the relative effectiveness of a system or device determined
by comparing input and output
What is efficiency
400
the emission and propagation of the entire range of the
electromagnetic spectrum including: gamma rays, x-rays,
ultraviolet radiation, visible light, microwaves,radio,waves
What is electromagnetic radiation
400
a stable elementary particle that is negatively charged and
orbits the nucleus of an atom
What is electron
500
a substance that cannot be reduced to a simpler substance
by chemical means
What is element
500
a quantity that describes the capacity to do work; a source
of usable power
What is energy
500
a change of energy from one form to another (e.g.,
mechanical to electrical, solar to electrical)
What is energy transfer
500
a measure of randomness or disorder of a closed system
What is entropy
500
the process in which a liquid is converted to its vapor
phase by heating the liquid