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Slide 2 Slide 3 What is physics? Physics is the study of the physical world. The goal of physics is to use a small number of basic concepts, equations, and assumptions to describe the physical world. Slide 4 You already know some physics. Slide 5 Physic problems deal with. Temperature Size Motion Position Shape Color Slide 6 Areas of Physics Mechanics-motion and its causes Slide 7 Areas of Physics Thermodynamics-heat and temperature Slide 8 Areas of Physics Vibrations and Wave Phenomena Slide 9 Areas of Physics Optics-light Slide 10 Areas of Physics Electromagnetism-electricity, magnetism, light Slide 11 Areas of Physics Relativity-particles moving at any speed, including very high speeds Slide 12 Areas of Physics Quantum mechanics-behavior of submicroscopic particle Slide 13 One Scientific Method Observation -leads to a question Hypothesis -a reasonable guess as why something happens; must be testable Experiment -to test hypothesis; must be controlled change only one variable at a time Evaluate results Conclusion does data support hypothesis Revise hypothesis if necessary Slide 14 Models Simplified models are used to make evaluation and experimentation easier. Too hard to evaluate all aspects of a situation at one time. 1 st step in making a modeldetermine your system Slide 15 Basketball Example Slide 16 Other Models Computer Models Small-scale replicas Slide 17 Assignment- See syllabus