Physics
The study of forces and energy
chemistry
The study of atoms and molecules
Earth sciences
The study of earths structure and composition, as well at the processes that chenge them
Controlled experiment
An experiment where a scientist changes one thing in the experiment to observe how another thing changes.
Variables
The things (quiantities) that change in the experiment
Independent variables
The variable in the experiment that is changed by the experimenter
dependent variable
Variable that changes because of the independent variable
Physical model
a model that represents a real object or phenomenon, usually on a smaller scale
conceptual model
a model that can be used to visualize things that cannot be seen such as atoms
mathematical model
a model that describes physical objects or phenomena using mathematical equations/ methods
computer model
a model that uses computers to explain and predict complex systems, such as weather patterns and the detailed movements of objects in the solar system
direct proportionality
a mathematical relationship between two variables whose ratio remains constant as their numerical values change (synonymous with positive correlation)
inverse proportionality
a mathematical relationship between variables in which an increase in the value of one causes a decrease in the value of the other (synonymous with negative correlation)
no correlation
a lack of relationship between variables on a graph; a change in one value does not affect the other
proportionality constant
the number that shows how two variables are related when they increase or decrease together (directly) or in opposite ways (inversely).
origin of the plot
the point on a graph where the value of both x and y axes are zero
scatterplot
a type of graph comparing two variables as data points in Cartesian, x-y coordinates
density
depends on the material itself, not on the objects size or mass
molar mass
a derived unit specifying the number of grams of a substance per mole of that substance
Molar units
the number of moles of a particular particle in one liter of another substance
speed
defined as the distance traveled per time interval
volume
the amount of space and object occupies
acceleration
rate at which the velocity of an object changes with respect to time.
force
a push or puss Measured in Newtons.
