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
The smallest unit of a chemical element that can still retain
the properties of that element.
What is atom?
100
A quantity that describes the capacity to do work; a source
of usable power.
What is energy?
100
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?
100
A set of objects, organisms, or different parts acting to form
a whole.
What is system?
200
A quality that tends to produce movement or acceleration of
a body in the direction of its application; a push or a pull.
What is force?
200
A subatomic particle having a positive charge and which is
found in the nucleus of an atom.
What is proton?
200
A form of energy resulting from the temperature difference
between a system and its surroundings.
What is heat?
200
An interconnection of electrical elements forming a
complete path for the flow of current.
What is circuit?
200
The event, condition, or factor that can be changed or
controlled in order to study or test a hypothesis in a
scientific experiment.
What is variable?
300
The observed effect of the force of gravitation.
What is gravity?
300
A substance that cannot be reduced to a simpler substance
by chemical means.
What is element?
300
The process in which a liquid is converted to its vapor
phase by heating the liquid.
What is evaporation?
300
A reaction or a change in a substance produced by
chemical means that results in producing a different
chemical.
What is chemical change?
300
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 experiment?
400
The peak or highest point on a wave.
What is crest?
400
A stable elementary particle that is negatively charged and
orbits the nucleus of an atom.
What is electron?
400
The energy possessed by a body because of its motion.
What is kinetic energy?
400
A physical change that occurs when matter changes to
another state (i.e., liquid, gas, or solid).
What is change of state?
400
Factor being measured or observed in an experiment.
What is dependent variable?
500
Amount of distance traveled divided by time taken; the
time-rate at which any physical process takes place.
What is speed?
500
A particle, object, or system that lacks a net charge.
What is neutral?
500
The transmission of heat through a medium and without the
motion of the medium.
What is conduction?
500
One of the fundamental states of matter in which molecules
do not have fixed volume or shape.
What is gas?
500
The factor that is changed in an experiment in order to study
changes in the dependent variable.