1. 9th Grade Science Chapter 12d
Using Sound
9th Grade Science Chapter 12d

2. Some uses of sound: Acoustics: Study of sound
May be used to design rooms and buildings
Design used to limit reverberation
Example

3. Some uses of sound: Echolocation:
Using echo time and speed of wave to determine distance
Some animals can do this: Bats
How distance is determined:

4. Some uses of sound: SONAR Stands for: Sound Navigation and Ranging
Similar to echolocation, sound sent from ship to bottom of water
How distance is found: Math Skills p 378
You send out a sonar pulse that is returned from a sunken pirate ship in 3 s. The speed of sound in water is 1439 m/s. How deep is the sunken ship?

5. Some uses of sound: Ultrasound
High frequency sounds can be used to clean material
Can be used to image soft organs/body parts
Can be used to treat some medical problems