2. 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.

3. 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.

4. 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

5. 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.)

6. Scientific Method A systematic method of observing, experimenting and analyzing data.

7. 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?)

8. 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.