Applied Science - Physics (2A) Pre Lab
 OBJECTIVES: Defining physics. Describing the physical world. VOCABULARY: physics science MATERIALS: toys balls anything in your classroom to help illustrate physics Students observe physics in the classroom
 BACKGROUND: Physics is the study of matter and energy produced by the interaction of matter.  Physics is the root of every field of science because it  underlies the understanding of all phenomena. Specifically as a science, physics is simply an explanation of motion, force, sound, electricity, magnetism, light, and the atom and nucleus. Physics is can help explain chemical, geological, and even biological sciences. Physics is the present day equivalent of what used to be called natural philosophy from which most of present day science arose. The study of these topics makes up that which is called physics. The field of physics is generally divided into the study of how matter interacts.  Physicists or scientists that study physics are trying to find a unified field theory.  They have not succeeded yet.  The interaction of matter can be divided into four groups including: 1.  Strong force within the atomic structure. 2.  Weak force amongst different atoms. 3.  Electromagnetic forces causing radio waves, light,  x-rays and more.  4.  Gravitational forces that produce motion throughout the Universe.  When these forces interacts it produces energy such as sound,  heat,  sound,  magnetism, electricity, and light.    The energy produced can then create work by combined them with principles of mechanics.  These traditional topics reflect the historical development of physics throughout the years in search for a unified field theory. A unified theory which can explain how all these forces and energy, in the Universe, work together. The search of a grand unified theory of all matter, sometimes border on science fiction.  The search to understand the Universe and how it works is is still not understood, but it is sure fun trying to figure it out!   Throughout this program, students are exposed to different components of the physical world. Point out that physics is all around us. We see, feel, touch, and perform physics everyday. We just don't think about it! Physics explains what is being done. The more a child observes, the more that child understands what is happening. For example, children throw balls which seems a natural act, but explaining why the ball doesn't go into outer space requires a physical explanation. The Earth's gravity pulls the ball back to Earth. Physics develops explanations why the world works the way it does. Even if we don't know why something happens, it will still happen.  Getting a child to think about it will create a natural curiosity throughout their lives.  PROCEDURE: Ask students if they have heard the word "physics?" Instruct them to attempt to give a definition before you explain.    Show students examples of physics in everyday life. Listed below are some examples. Be a little dramatic by making a book smash on the floor and ask students why? (Gravity.) In many cases, answers are not as important as having the students ask questions about their physical surroundings. Below are a few words and examples you can use. In later grades, students will have developed the tools necessary to put together all the pieces of physics and develop a "unified theory."    MOTION - cars moving, flight, sailing FORCE - throwing a baseball, hitting a home run, shooting a bullet ENERGY - solar energy, heat, wind MATTER - solids, liquids, gases SOUND - bells with different sounds, telephones, talking MAGNETISM - motors, magnets ELECTRICITY - light, switches, batteries LIGHT - rainbows, television ATOM - elements (sulfur, oxygen, hydrogen)