What is a quality that tends to produce movement or acceleration of a body in the direction of its application; a push or a pull
100
Atom
What is the smallest unit of a chemical element that can still retain the properties of that element
100
Heat
What is a form of energy resulting from the temperature difference between a system and its surroundings
100
Solid
What is having a definite shape and a definite volume; one of the fundamental states of matter
100
Investigation
What is a procedure that is carried out in order to observe a response caused by a stimulus; not a complete experiment
200
Gravity
What is the observed effect of the force of gravitation
200
Electron
What is a stable elementary particle that is negatively charged and orbits the nucleus of an atom
200
Energy
What is a quantity that describes the capacity to do work; a source of usable power
200
Reflection
What is the bouncing off or turning back of light, sound, or heat from a surface
200
Scientific method
What is a plan of inquiry that uses science process skills as a tool to gather, organize, analyze, and communicate information
300
Speed
What is the amount of distance traveled divided by time taken; the
time-rate at which any physical process takes place
300
Element
What is a substance that cannot be reduced to a simpler substance by chemical means
300
Evaporation
What is the process in which a liquid is converted to its vapor phase by heating the liquid
300
Gas
What is one of the fundamental states of matter in which molecules do not have fixed volume or shape
300
Experiment
What is 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
400
Acceleration
What is the rate of change in velocity, usually expressed in meters per second; involves an increase or decrease in speed and/or a change in direction
400
Neutral
What is a particle, object, or system that lacks a net charge
400
Thermal energy
What is the internal energy found by adding the kinetic energy of particles making up a substance
400
Light
What is the electromagnetic radiation that lies within the visible range
400
Variable
What is the event, condition, or factor that can be changed or controlled in order to study or test a hypothesis in a scientific experiment
500
Velocity
What is the time-rate at which a body changes its position; defined as displacement divided by the time of travel
500
Neutron
What is a subatomic particle having zero charge, found in the nucleus of an atom
500
Radiation
What is the emission of energy in the form of rays or waves
500
Liquid
What is one of the fundamental states of matter with a definite volume but no definite shape
500
System
What is a set of objects, organisms, or different parts acting to form a whole