SCIENCE LATIN = “SCIENTIA” KNOWLEDGE Quest for Knowledge Many Seekers of Knowledge Not Limited to Scientists Very Broad Definition

SCIENCE Difficult to Define Like Love, Beauty, Art

SCIENCE Use of observation, measurement, logic and a sense of beauty to devise general principle about the Natural World May include: Math Logic Physics Chemistry Biology Etc.

PHYSICS GREEK = “PHYSICS” NATURE Pure Science Summarizes and Explains General Facts and Principles about Natural World Applied Science Technology Engineers

SCIENTIFIC METHODS SEQUENCE OF ACTIVITIES Qualitative Quantitative Idea Non-numerical Description Details Mathematical Numerical Observation 3) Testing 5) Prediction Hypothesis 4) Theory 6) Empirical- Experimental Check

SOME MEASURED LENGTHS Distance to a Quasar 6 X 1025 Meters Distance to Nearest Star (Alpha Centauri) 4.3 X 1016 Meters Radius of the Earth 6.4 X 106 Meters Thickness of Textbook Page 1 X 10-4 Meters Size of Poliomyelitis Virus 1.2 X 10-8 Meters Radius of Hydrogen Atom 5.3 X 10-11 Meters Effective Radius of a Proton 1.2 X 10-15 Meters