a particle, object, or system that lacks a net charge
What is neutral?
100
unit of energy; the amount of heat needed to raise one gram
of water one degree Celsius at standard atmospheric
pressure
What is a calorie?
100
a physical change that occurs when matter changes to
another state (i.e., liquid, gas, or solid)
What is change of state?
100
a mixture of two or more substances uniformly dispersed
throughout a single phase
What is a system?
200
the change in direction of a wave caused by passing by an
obstacle or traveling through an opening
What is diffraction?
200
the smallest unit of a chemical element that can still retain
the properties of that element
What is an atom?
200
a fundamental principle stating energy cannot be created
nor destroyed but only changed from one form to another
What is conservation of energy?
200
an interconnection of electrical elements forming a
complete path for the flow of current
What is a circuit?
200
a procedure that is carried out and repeated under
controlled conditions in order to discover, demonstrate, or
test a hypothesis; includes all components of the scientific
method
What is an experiment?
300
the number of cycles or waves per unit time
What is frequency?
300
a stable elementary particle that is negatively charged and
orbits the nucleus of an atom
What is a electron?
300
the emission and propagation of the entire range of the
electromagnetic spectrum including: gamma rays, x-rays,
ultraviolet radiation, visible light, microwaves, and radio
waves
What is electromagnetic radiation?
300
the pivot point of a lever
What is a fulcrum?
300
a procedure that is carried out in order to observe a
response caused by a stimulus; not a complete experiment
What is an investigation?
400
a force of attraction between two masses
What is gravitation?
400
a substance that cannot be reduced to a simpler substance
by chemical means
What is a element?
400
a change of energy from one form to another (e.g.,
mechanical to electrical, solar to electrical)
What is energy transfer?
400
a type of simple machine; a slanted surface that makes it
easier to move a mass from a lower to a higher point
What is an inclined plane?
400
the factor that is changed in an experiment in order to study
changes in the dependent variable
What is an independent variable?
500
the property of an object, due to its mass, that causes it to
resist any change in its motion unless overcome by a force
What is inertia?
500
a subatomic particle having zero charge, found in the
nucleus of an atom
What is a neutron?
500
a measure of randomness or disorder of a closed system
What is an entropy?
500
a type of simple machine; consists of a rigid bar that pivots
about a fulcrum, used to transmit and enhance power or
motion
What is a lever?
500
a plan of inquiry that uses science process skills as a tool to
gather, organize, analyze, and communicate information