1. Hearing the ear

2. Human Hearing Hearing

3. Hearing Range Hearing test

5. Sonar Sonar in ships whales

6. Ultrasounds (above human range of hearing) Examples: Bats bats

7. Humans and Echolocation Daniel Kish

8. Other Uses for Ultrasounds Imaging: Baby Echocardiogram of the heart

9. Speaking Vocal cords

10. Doppler Effect Really Cool Doppler Demo

11. Doppler Radar

12. Loudness is a measure of amplitude. It is also called INTENSITY! The decibel was named after Alexander Graham Bell, the inventor of the telephone.

13. Music Harmony- when notes sound pleasing together. It is actually a function of mathematical proportions. Middle C is 256 Hz High C is at 512Hz Notes in between need to be evenly divisible to sound good

14. Wave Interference Noise Cancelling Headphones Tacoma Narrows Bridge