technology

 science or knowledge put into practical use to solve problems or invent useful tools.

Physical Science

the sciences concerned with the study of inanimate natural objects, including physics, chemistry, astronomy, and related subjects.

Model

 a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly

Observation

the action or process of observing something or someone carefully or in order to gain information

Hypothesis

a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Theory

a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment

Scientific Law

a statement based on repeated experimental observations that describes some aspect of the world