P6 - Waves

P6 - Waves

1. Amplitude

   • The maximum height of a wave from the middle of the wave to its peak or trough.

2. Wavelength

   • The length of a single wave, measured from one wave peak to the next.

3. Frequency

   • The number of waves produced each second. The unit of frequency is hertz (Hz).
     • The units of frequency are HZ

4. Hertz

   • the unit of sound waves

5. Pitch

   • The frequency of a sound. Sounds with a high pitch have a high frequency.

6. Echo

   • A sound caused by the reflection of sound waves from a smooth surface back to the listener.

7. Volume

   • how loud or quiet the sound is

8. reflect

   • bounce of shiny surfaces such as mirrors reflect light well

9. olliescope trace

   • The wave pattern seen on the screen on an ollie scope

10. ultrasound

    • Sound with a frequency of 20,000 hz

11. Micophone

    • Takes sound waves and turns them into elictrical signalls

12. Speaker

    • Takes electrical signals and turns them into a sound waves

13. types of waves

    • Longditudial
      • The waves moves in the direction of travel
        • like sound waves
      • comprossetions -where the particals are close together
        • raerfection- where the particals are close together
    • transverse
      • The waves move across the directon of travel
        • like sound waves or water waves

14. Ear

    • pinna
    • Ear cannel
    • ear drum
    • ossicles
      • hammer, anvil and stirrup
    • cochlea
      • Audlitory nerve
        • Brain
      • Tinny hairs moves and convert the soundwaves into an electrical signal

15. The speed of sound

    • sound travels fast in solids
    • in water sound travels at 1500
    • in air sound travels at 330m/s
    • sound does not travel in a vacume