1. Observation Use of one or more of the senses to gather information
Must be objective observation- information that has a meaning independent of an individuals experience.
NOT a subjective observation-
information that has meaning based on individual experience

2. Observation continued…
Qualitative observation- non-numerical observations
Quantitative observation- numerical observation

3. Inference
A logical interpretation based on prior knowledge or experience.

4. Assumption
Something taken for granted or accepted as true without proof.
An inference CAN be an assumption.

5. Scientific Theory vs. Scientific Law
Applies to a well-tested explanation that unifies a broad range of observations. Broader in scope, and give overarching explanations of how nature works.
Accepted by the scientific community.
Allows scientists to make accurate predictions about new situations.
NOT a guess or a “belief that can guide behavior”
A phenomenon of nature that has been proven to always occur whenever certain conditions exist or are met.
Does not suggest a mechanism or explanation of phenomena, just results of repeated testing.
called “natural law”