2. Section a – Chapter # ● Chapter 1 - The Science of Physics

3. Section b – Tech. Terms ● Model – a representation of an object, event, system, or concept. ● System – All the things and interaction considered in an experiment. ● Controlled experiment – experiment where only one variable is changed.

4. Section c – Equations

5. Section c – Key points ● What is physics? – Topic of physics ● Physics is considered to be difficult but isn't ● Physics involves describing and understanding the physical world. ● Our modern life is replete with applications of physics. ● Physics is everywhere – We use the laws of physics all the time – Mechanics - motion & its causes – Thermodynamics – heat & temp

6. Section c – Key points (2) ● What is physics? – Topic of physics ● Physics is everywhere (cont.) – Vibrations & waves – repetitive motions – Optics – light – Electromagnetism – electricity & magnetism – Relativity – high speed particles (light) – Quantum mechanics – sub-atomic world. – Designers, builders & operators need an understanding of physics

7. Section c – Key points (3) ● What is physics? – Scientific Method ● Rules defined by observation. ● Scientists observe world using scientific method which involves constructing & testing a hypothesis. ● Models describe only part of reality – Models explain fundamental features of phenomena – Physicists studies a limited set of items or interactions, the system – Disregard things that will not affect the obs.

8. Section c – Key points (3) ● What is physics? – Scientific Method ● Models describe only part of reality – System is studies in isolation to reduce complexity ● Models can help build hypotheses – Hypothesis is a testable, reasonable explanation for observations – Hypotheses can be “thought” or actual experiment.

9. Section c – Key points (3) ● What is physics? – Scientific Method ● Models help guide experimental design – Hypotheses must be tested in many experiments – Models used to approximate real situations that are hard to measure (Galileo's ramps) – Experiments should be controlled experiments where only one variable is changed. ● Hypotheses an make prediction in new situations

10. Section c – Key points (3) ● What is physics? – Scientific Method ● Hypotheses make prediction in new situations

12. ● http://teacher.pas.rochester.edu/phy_labs/a ppendixe/appendixe.html#Heading6