Waves

Waves

1. Longitudinal Waves

   • Oscillates in the same direction as travel

2. Transverse Waves

   • Oscillates perpendicular to the direction of travel

3. Amplitude

   • The maximum value of an objects displacement from ts normal position

4. Wave Front

   • A surface containing points affected in the same way by a wave at a given time.

5. Frequency

   • The number of waves of cycles of a wave that passes a given point in a second

6. Wavelength

   • The minimum distance between two points on the wave that are a the same point in the wave cycle

7. Period

   • The time taken for a wave to complete one full cycle

8. A wave is a physical disturbance travelling through a medium which transfer energy/ information without transferring matter.

9. Wave speed = frequency/ length

   • v = f x lamda
   • For Electromagnetic spectrum c = f x lamda

10. frequency = 1/time period

    • f = 1/T

11. Refraction

    • Refraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or the bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves.

12. Reflection

    • Upon reaching the barrier placed within the water, these waves bounce off the water and head in a different direction.

13. Frequency range for human hearing is 20 - 20 000Hz