What is the number of cycles or waves per unit time
100
atom
What is the smallest unit of a chemical element that can still retain the properties of that element
100
independent variable
What is the factor that is changed in an experiment in order to study changes in the dependent variable
100
screw
What is a type of simple machine that consist of an inclined plane wrapped around a cylinder
100
calorie
What is unit of energy; the amount of heat needed to raise one gram of water one degree Celsius at standard atmospheric pressure
200
velocity
What is the time-rate at which a body changes its position; defined as displacement divided by the time of travel
200
electron
What is a stable elementary particle that is negatively charged and orbits the nucleus of an atom
200
investigation
What is a procedure that is carried out in order to observe a response caused by a stimulus; not a complete experiment
200
solid
What is having a definite shape and a definite volume; one of the fundamental states of matter
200
condensation
What is 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
300
amplitude
What is in any periodic function (e.g., a wave) the maximum absolute variation of the function
300
element
What is
a substance that cannot be reduced to a simpler substance by chemical means
300
dependent variable
What is factor being measured or observed in an experiment
300
pulley
What is a type of simple machine; a circular lever, usually a wheel with a groove where a rope can be placed and used to change the direction of a force
300
conduction
What is the transmission of heat through a medium and without the motion of the medium
400
air resistance
What is force of air on moving objects
400
neutral
What is a particle, object, or system that lacks a net charge
400
system
What is a set of objects, organisms, or different parts acting to form a whole
400
solution
What is a mixture of two or more substances uniformly dispersed throughout a single phase
400
conservation of energy
What is a fundamental principle stating energy cannot be created nor destroyed but only changed from one form to another
500
acceleration
What is rate of change in velocity, usually expressed in meters per second; involves an increase or decrease in speed and/or a change in direction
500
neutron
What is subatomic particle having zero charge, found in the nucleus of an atom
500
scientific method
What is a plan of inquiry that uses science process skills as a tool to gather, organize, analyze, and communicate information
500
Inclined plane
What is a type of simple machine; a slanted surface that makes it easier to move a mass from a lower to a higher point
500
convection
What is heat transfer in a gas or liquid by the circulation of currents from one region to another