To arrange in a specific order or group by categories based on similarities.

A scientific principle based on many observations of naturally occurring events that demonstrate it to be without exception under certain stated conditions.

A statement that tells what an investigation showed, based on observations or data.

A factor or condition in a scientific experiment that is purposefully kept the same.

Evidence based on observations or experiments rather than theory.

A statement that can be tested scientifically through experiments and/or other scientific observations.

A group in a scientific experiment that serves as a reference for comparison to the experimental group; a group that is untreated by the factor being tested.

Measurements or observations collected and recorded in an experiment or investigation.

A replica or description designed to show the workings or structure of an object or system.

A factor, usually being measured or observed, that responds to, or depends on, another factor (test variable).

A scientific test or procedure that is carried out under controlled conditions to answer a scientific question.

An explanation based on evidence that is not directly observed.

An organized scientific study of the natural world that many include making systematic observations, asking questions, gathering information, analyzing data, summarizing results, drawing conclusions, and/or communicating results.

Information about the natural world gathered through the senses and/or scientific instruments

Making multiple sets of measurements or observations in a scientific investigation.

To state what one thinks will happen under certain conditions based on data or observation.

The use of scientific knowledge and processes to solve practical problems.

The reproduction of a scientific investigation by another person to ensure accuracy.

Observations obtained by following a preplanned method of observation.

The variable manipulated by the experimenter in order to study changes in the outcome variable.

A term used to describe a question that can be answered through an experiment or observation.

Multiple sets of measurements or observations in a scientific investigation.

A term used to describe the certainty of data or results of an investigation or experiment.

An event, condition, or factor that can be controlled in order to study or test a hypothesis in a scientific experiment.

An explanation for some naturally occurring event developed from extensive observations, experimentation, and reasoning.