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Outline Of Chapter 1 Of High School Physics Book Includes Study Guide Questions.

1439 words - 6 pages

Chapter 1: The Science of Physics (Page 3 - 37)1-1 What is Physics?The Topics of Physics- Physics is simply the study of the physical world.- Goal of physics is to use a small number of basic concepts, equations, and assumptions to describe the physical world.Physics is EverywhereAreas within Physics (Name / Subjects / Examples)- Mechanics - Motion and its causes - Falling Objects, Friction, Weight, Spinning Objects- Thermodynamics - Heat and temperature - Melting and freezing processes, engines, refrigerators- Vibrations and Wave Phenomena - Specific types of repetitive motions - Springs, pendulums, sound- Optics - light - Mirrors, lenses, color, astronomy- Electromagnetism - electricity, magnetism, and light - Electrical charge, circuitry, permanent magnets, electromagnets- Relativity - Particles moving at any speed, including very high speeds - particle collisions, particle accelerators, nuclear energy- Quantum mechanics - behavior of submicroscopic particles - the atom and its partsThe Scientific MethodScientific Method Steps- Make observations and collect data that lead to a question.- Formulate and objectively test hypotheses by experiments.- Interpret results, and revise the hypothesis if necessary.- State conclusions in a form that can be evaluated by others.Physics uses models that describe only part of reality.- Physicists use models to explain the most fundamental features of various phenomena.- Usually impossible to describe all aspects of a phenomenon at the same time.- Break into different parts to determine which to analyze/disregard.- 1st step: Decide what to study (system)- System: A set of items or interactions considered a distinct physical entity for the purpose of study.- A single object and the items that immediately affect it are the focus of attention.- A model can be summarized with a diagram, computer simulation, or small-scale replica.Models can help build hypotheses.- A scientific hypothesis is a reasonable explanation for observations.- Galileo's "thought experiment" (1638)- Modeled the behavior of falling objects to develop hypothesis on how objects fell.- Hypothesized that all objects fall at the same rate in the absence of air resistance, regardless of size.Models help guide experimental design.- Any hypothesis must be tested in a controlled experiment.- Controlled Experiment: Experiment involving manipulation of a single variable or factor.- Must change one variable at a time to determine what influences the phenomenon you are observing.The best physics hypotheses can make predictions in new situations.- When a different result is found, scientists repeat the experiment until certain of no error in results.- If unexpected results occur, the hypothesis must be abandoned or revised.- A conclusion is only valid only if others can verify it.Section Review1) Name the areas of physics.2) Identify the area of physics that is most relevant to each of the following situations. Explain your reasoning.a) A high school...

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