CHARACTERISTIC-OF-WAVES-AND-WAVE-VELOCITY.pptx

Used it properly

1. CHARACTERISTIC OF WAVES AND WAVE VELOCITY PRESENTED BY GROUP 2

2. How do Waves moves? As the wave Form and move outwards from the source of vibration, the wave eventually hit an enpoint. When it strikes something some of the wave will reflect. As light waves hit an object, they will reflect in all direction and reach your eyes. The brain gets the information from your eyes, and enabling you to see the object. When you hears echoes, you know that they are heared because sound waves reflect off from the obsticle it hits.

3. Reflection is the bouncing of the waves when hit the boundary. in wave motion, as the wave hit the obstacle, portion of that gets reflected and another portion of the energy is transmitted or absorbed. When boundary is being crossed by waves, the waves velocity change and this causes it to move in a diffirent direction than the incident waves that strikes it. REFLECTION

4. is the bouncing of the waves when hit the boundary. in wave motion, as the wave hit the obstacle, portion of that gets reflected and another portion of the energy is transmitted or absorbed. When boundary is being crossed by waves, the waves velocity change and this causes it to move in a diffirent direction than the incident waves that strikes it. REFLECTION

5. REFRACTION The bending of waves as it encounters a change toward the waves when it moves through a diffirent medium. Earthquake seismic waves get refracted as they travel through the diffirent layers of the Earth. The number of layers, composition, and density of material influence the velocity of a wave. As the waves travels, they spread along the certain space. the moment the waves hit the obstacle, they bend.

6. REFRACTION

7. The obstacles are sometimes called slits. The amount of bending is depends on the wave properties, such as wavelength and the size of the slits. Radio waves, the signals carriers, can bend when they hit big obstacle, such as mountains and buildings. This the reason why singnals can reach you, even if you are surrounded by so many structures. DIFFRACTION

8. The obstacles are sometimes called slits. The amount of bendin is depends on the wave properties, such as wavelength and the size of the slits. Radio waves, the signals carriers, can bend when they hit big obstacle, such as mountains and buildings. This the reason why singnals can reach you, even if you are surrounded by so many structures. DIFFRACTION

9. Interference refers to the behavior of the waves as they pass through the same region of space at the same time.When waves meet,they just proceed without being changed at all.When the waves are in the same region of space,they are said to be interfering.The princriple of superposition describes how the waves look when they combine.The law When the waves combine,the interfering waves are given by the sum of the displacements of the individual waves at each point in the medium. INTRFERENCE

10. Interference is the addition of waves.It can be constructive or destructive interference.If the direction of the displacement of the waves is the same,the amplitude of the combined waveform is always greater than the amplitude of the individual wave pulses.This is called constructive interference.On the other hand,if the displacement of one is negative,and the other is positive,the waves are out of phase and destructive interference occurs. INTRFERENCE

11. Constructive Intreference INTRFERENCE Destructive Intreference

12. WAVE MEASUREMENT when you are looking at a traveling wave, you will notice that it consists of high and low points. The highest point is called Crest, and the lowest is called Trough. To describe waves, you will need to define their different measurable aspects. ?

13. WAVE MEASUREMENT Which are Amplitude, Wavelength, and frequency. Amplitude is the maximum distance of a point of a wave from its equilibrium point, symbolized by the letter A. Wavelength is the distance from the highest peak of a wave to the next highest peak, symbolized by the Greek letter λ or lambda. ? Frequency ( f ), Is the number of one entire cycle of oscillation in a given point per unit time, usually in second

14. Wave Measurements Definition Symbol Unit amplitude distance from equilibrium position of the wave to the crest/troughs A meter (m), nanometer(nm) wavelength distance between two succesive crest or toughs λ meter (m), nanometer(nm) frequency numeber of cycle per second f per second (s- 1 ) or hz period time for one complete wavelenght to pass by given point T seconds(s)

15. Wave velocity The wave change from its initial position to certain point, as seen on the black arrow lines. This distance moved in one cycle is the wavelength of the wave. in order to get the right velocity of the wave, it is important to determine the distance and the time it takes to travel and can distance. In terms of frequency is expressed as wave velocity = distance move / time taken

16. In terms of an equation, it is expressed as: v = wavelength / time The distance moved by waves is measured in wavelength, thus the equation can be further written as; v = wavelength / time The time it takes to complete one wave cycle or wave length is period, therefore the equation can be further written as ; v = wavelength / period 1/T is f, thus the wave velocity expressed in terms of frequency v = wave length x frequency

17. The Distance between two successive crest is 3.5 meters and one wave takes 7.5 second. Calculate the frequency and speed of the above GIVEN: wave length = 3.5 meters time = period = 7.5 seconds required; f and v

18. The period of the wave is 7.5 seconds, the frequency can be calculated as f = 1 / T f = 1 / 7.5 s f = 0.13 per second or 0.13 Hz

19. Use the calculated frequency from the first solution in order to determine the wave velocity, v. v = (3.5m) x (0.13) v = 0.45m/s

20. QUIZ TIME

21. The bending of waves as it encounters a change toward the waves when it moves through a diffirent medium. A. Reflection B. Intrference C. Diffraction D. Refraction

22. When waves meet,they just proceed without being changed at all.When the waves are in the same region of space A. Constructive Intrference B. Intrference C. Destructive Intreference D. Inaction Intreference

23. What wave phenomenon is the reason why singnals can reach you, even if you are surrounded by so many structures. A. Intrference B. Refraction C. Diffraction D. Reflection

24. What Type of Intreference when two waves in opposite direction meet and cancel each other A. Constructive Intrference B. Intrference C. Destructive Intreference D. Inaction Intreference

25. What the name of the highest point of wave A. Crest B. trough C. Period D. Amplitude