What is Physics Physics The word Physics is
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What is Physics?
Physics �The word Physics is originated from the Greek word “physikos”. �In physics, we study natural phenomena and the properties of matter. The aim of physics is to explain the fundamental nature of the universe by using the concept of physics. �Physics involves the conduct of studies and experiments to find answers to the question “Why? ” and “How? ” in relation to the mysteries of the universe.
Physics cont. �The majority of natural phenomena can be explained using the principles of physics, for example: �We cannot see an object behind a wall because light travels in a straight line. �The image of the pencil formed by the mirror is due to the reflection of light.
Fields of Physics �The scope of physics very wide. Knowledge of physics is grouped into different fields of study. �Force and Motion (investigates the action of force and motion) �Forces and Pressure (pressure in liquids, gas pressure, atmospheric pressure, Pascal’s principle, Archimedes’ principle, Bernoulli’s principle
Fields of Physics cont. �Heat (Studies the influence of heat on different types of matter. ) �Light (explains the different phenomenon due to light) �Electricity and Electromagnetism (Investigates the interactions of electrical and magnetic fields. ) �Electronics (studies the use of electronic devices in various fields �Waves (Understands the properties of different types of waves and their uses. )
Scientific Method �A systematic method of observing, experimenting and analyzing data.
Steps of Scientific method 1. Stating a Problem 2. Research and gather information 3. Form a hypothesis (should be in an if/then statement) 4. Test the hypothesis (experiment) 5. Analyze Data 6. Draw conclusions ( was the hypothesis supported? )
Your Turn! �Design an experiment using the steps of the scientific method. �Your experiment must have dependent and independent variables plus a control group. �The independent variable in an experiment is the variable that YOU change in order to affect the dependent variable. �The dependent variable is what is being measured, or what is being affected.