Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.
-
Upload
erik-joseph-tucker -
Category
Documents
-
view
230 -
download
2
Transcript of Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.
![Page 1: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/1.jpg)
Sound Unit
![Page 2: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/2.jpg)
1. Vibration – a rapid back and forth movement that produces sound.
![Page 3: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/3.jpg)
2. 3 ways sound is similar to light:
1) Travels outward in all directions.
2) Travels in waves.3) A form of energy.
![Page 4: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/4.jpg)
3. Compression – region of a sound wave where molecules are crowded together.
![Page 5: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/5.jpg)
4. Rarefaction – region of a sound wave where
molecules are spread apart.
![Page 6: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/6.jpg)
5. 3 characteristics that describe a sound wave are:
1) Wavelength2) Frequency3) Amplitude
![Page 7: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/7.jpg)
6. Amplitude – height of the wave.
![Page 8: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/8.jpg)
7. Pitch – how high or low a sound seems. Pitch depends on the frequency of waves.
• Long waves produce low frequencies.
• Short waves produce high frequencies.
![Page 9: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/9.jpg)
8. Frequency of sound is measured in units called hertz (Hz).
![Page 10: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/10.jpg)
9. Intensity – amount of energy a sound has (loudness).
Soft Sound
Loud Sound
![Page 11: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/11.jpg)
10. Intensity or loudness of sounds is measured in units called decibels (dB).
![Page 12: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/12.jpg)
11. 3 things can happen when sound strikes matter.
• Transmit – travels through the material.
• Absorb – trapped in material.• Reflect – bounces off the material.
![Page 13: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/13.jpg)
12. Sound travels 0.2 miles per second.
![Page 14: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/14.jpg)
13. Molecules look differently depending on the type of matter they are in.
Gas Liquid
Solid
![Page 15: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/15.jpg)
14. Speed of sound through materials from fastest to slowest:
• Solid• Liquid• Gas
![Page 16: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/16.jpg)
15. Echolocation – using reflected sound to locate objects.
![Page 17: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/17.jpg)
16. Infrasonic Sound – sound with a frequency below 20 Hz.
![Page 18: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/18.jpg)
17. Ultrasonic Sound – sound with a frequency above
20,000 HZ.
![Page 19: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/19.jpg)
18. Sonogram – made when sound waves are reflected off parts of a human’s body.
![Page 20: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/20.jpg)
19. Sonar – method of using ultrasonic sound to locate objects under water.
![Page 21: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/21.jpg)
List as many things that you know about sound so far from our unit of study.
![Page 22: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/22.jpg)
Which wave shows a low-pitched, soft sound?
![Page 23: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/23.jpg)
Which wave shows a high-pitched, loud sound?
![Page 24: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/24.jpg)
Which wave shows a high-pitched, soft sound?
![Page 25: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/25.jpg)
How are frequency of a wave and pitch related? How do they go hand-in-hand?
![Page 26: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/26.jpg)
19. Sonar – method of using ultrasonic sound to locate objects under water.
![Page 27: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/27.jpg)
19. Sonar – method of using ultrasonic sound to locate objects under water.
![Page 28: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/28.jpg)
19. Sonar – method of using ultrasonic sound to locate objects under water.
![Page 29: Sound Unit. 1. Vibration – a rapid back and forth movement that produces sound.](https://reader036.fdocuments.in/reader036/viewer/2022062314/56649eec5503460f94bfd764/html5/thumbnails/29.jpg)
19. Sonar – method of using ultrasonic sound to locate objects under water.