I
A condition or factor that is assumed to have one value, or remain unchanged, throughout a particular investigation
Constant
A testable idea or explanation
A method that is used to study and analyze the characteristics of an actual or theoretical system.
Simulation
A body of rock or sediment that stores ground water and allows the flow of ground water
Aquifer
an increase in the amount of nutrients, such as nitrates, in a marine or aquatic ecosystem
Eutrophication
A description of how close a measurement is tot he true value of the quantity measured.
Accuracy
an organized procedure to study something under controlled conditions
Experiment
A pattern, plan, representation, or description designed to show the structure or workings of an object, system or concept
Model
the boundary between drainage areas that have streams and flow in opposite directions
Divide
drinkable water
Potable
in a scientific investigation, the factor that changes as a result of manipulation of one or more independent variables
Dependent Variable
Information gathered by observation or experimentation that can be used in calculating or reasoning
Data
A quantitative description that includes both a number and a unit
Measurement
the path that a stream follows
Channel
in a solution, the substance in which the solute dissolves
Solvent
In a scientific investigation, the factor that is deliberately manipulated
Independent Variable
The knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested.
Science
a test model of a product
Prototype
a body of water that typically forms behind a dam
reservoir
Pollution that comes from a specific site
Point Source Pollution
the exactness of a measurement
Precision
The process of obtaining information by using the senses
Observation
The observations, measurements, and other types of data that people gather and test to support and evaluate scientific explanations
Empirical Evidence
the water that is beneath earths surface
Ground water
pollution that comes from many sources rather than from a single specific site; an example is pollution that reaches a body of water from streets and storm sewers
Non-point source pollution