amount of distance traveled divided by time taken; the
time-rate at which any physical process takes place
100
What is element?
a substance that cannot be reduced to a simpler substance by chemical means
100
What is heat?
a form of energy resulting from the temperature difference
between a system and its surroundings
100
What is circuit?
an interconnection of electrical elements forming a
complete path for the flow of current
100
What is experiment?
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
200
What is force?
a quality that tends to produce movement or acceleration of
a body in the direction of its application; a push or a pull
200
What is proton?
a subatomic particle having a positive charge and which is
found in the nucleus of an atom
200
What condensation?
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
200
What is pressure?
the force exerted per unit area
200
What is system?
a set of objects, organisms, or different parts acting to form
a whole
300
What is velocity?
the time-rate at which a body changes its position; defined
as displacement divided by the time of travel
300
What is electron?
a stable elementary particle that is negatively charged and
orbits the nucleus of an atom
300
What is energy transfer?
a change of energy from one form to another (e.g., mechanical to electrical, solar to electrical)
300
What is density?
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
300
What is investigation?
a procedure that is carried out in order to observe a
response caused by a stimulus; not a complete experiment
400
What is friction?
a force that opposes the relative motion of two material
surfaces in contact with one another
400
What is neutral?
a particle, object, or system that lacks a net charge
400
what is radiation?
emission of energy in the form of rays or waves
400
What is prism?
a piece of glass with polished plane surfaces that disperses
a beam of white light into its component colors
400
What is independant variable?
the factor that is changed in an experiment in order to study
changes in the dependent variable
500
What is inertia?
the property of an object, due to its mass, that causes it to
resist any change in its motion unless overcome by a force
500
What is neutron?
a subatomic particle having zero charge, found in the
nucleus of an atom
500
What is calorie?
unit of energy; the amount of heat needed to raise one gram
of water one degree Celsius at standard atmospheric
pressure
500
What is fulcrum?
the pivot point of a lever
500
What is dependant variable?
factor being measured or observed in an experiment