Fact, Hypothesis, Law, Theory. Fact = a stated observation Hypothesis = a proposition that may be investigated Law or Principle = a description of observable phenomena Theory = an explanation based on extensive evidence. Continental Drift to Plate Tectonics.
Neurophysiology of Brain Function
Search for Extraterrestrial Intelligence (SETI)10 different areas of inquiry:
Take a few minutes with a pencil and paper and draw a scientist at work.