1. Periodic Motion Periodic Motion Oscillatory Motion Wave Motion

2. Periodic Motion It is a motion which is regularly repeated in equal periods of time

3. Examples of periodic motion: Oscillatory Motion Wave Motion

4. Oscillatory Motion

5. Oscillatory Motion It is the motion of the oscillating body around it ’ s rest point, where the motion is repeated through equal intervals of time

6. Examples of oscillatory motion: Clock Tuning fork Spring Stretched String Motion of swing

7. Concepts related to the oscillatory motion Amplitude Complete Oscillation Periodic Time Frequency

8. Amplitude It is the maximum displacement done by the oscillating body away from it ’ s original position (The measuring unit is meter or centimeter)

9. Complete Oscillation It is the motion of an oscillating when it pass by a fixed point tow successive times in the same direction (The complete oscillation includes four amplitudes)

10. Periodic Time (T) It is the time taken by an oscillating body to make complete oscillating (The measuring unit is second)

11. Frequency (F) It is the number of complete oscillation made by an oscillating body in one second (The measuring unit is Hertz)

12. Wave Motion

13. Wave Motion It is the motion produced as a result of the vibration of the medium particles at a certain moment in a definite direction

14. It is the disturbance that propagates and transfers energy in the direction of propagation The Wave

15. Line Of Wave Propagation It is the direction through which the wave propagates

16. Types of waves According to the ability to propagate and transfer energy are: A- Mechanical waves B- Electromagnet waves

17. Types of waves According to the direction of vibration of medium particles relative to the direction of propagation are: A- Transverse waves B- Longitudinal waves

18. Mechanical wave It is the wave which need a medium to propagate through and doesn’t propagate through vacuum ( it’s speed is relatively low )

19. Examples of mechanical waves: Water waves (transverse waves) Sound waves (Longitudinal waves)

20. Electromagnet wave It is the wave which doesn ’ t need a medium to propagate through and propagate through vacuum ( it ’ s speed is extremely high )

21. Examples of electromagnetic waves Light waves (transverse waves) Radio waves (transverse waves)

22. Longitudinal wave It is the disturbance in which the particles of the medium vibrate along the direction of wave propagation ( it is formed of Compressions and Rarefactions )

23. Transverse wave It is the disturbance in which the particles of the medium vibrate perpendicular to the direction of wave propagation ( it is formed of Crests and Troughs )

24. Concepts related to wave motion Wave length Amplitude Wave velocity Wave frequency

25. Wave length It is the distance between two successive crests or troughs ( for transverse wave ). Or It is the distance between the centers of two successive compressions or rarefaction ( for longitudinal ). ( The measuring unit is meter)

26. Amplitude It is the maximum displacement achieved by the medium particles away from their rest position (The measuring unit is meter)

27. Wave velocity (v) It is the distance covered by the wave in one second (The measuring unit is meter per second)

28. Frequency (F) It is the number of waves produced from the source in one second (The measuring unit is Hertz)

29. BY BY Farouck Mohamed Hinna