Sound

Bar Code: 1209, 2302

---

Descprition: In Sound, students use tuning forks, slide whistles, strings, and other sound-producing objects to investigate the characteristics of sound. Students learn that sound is caused by vibrations, and they explore how sound travels. They learn about the relationship of pitch and volumeto the frequency and amplitude of vibrations. They discover, for example,that they can alter pitch by varying the length or tension of a string.Constructing simple stringed instruments, they discover how they can increasethe volume of the sound produced by the strings. Students investigate thecharacteristics of another common sound-producing mechanism--the humanvocal cords--and build model vocal cords. They also learn about the anatomyand functioning of the human ear. They apply what they learn in the unitby designing and building musical instruments or other sound-producingdevices.

Inventory:

1 container of materials:

1. Long balloons inflates 3x15" (10)
2. Styrofoam cups 6 oz.
3. Paper clips (100)
4. Plastic pushpins 1cm (5)
5. Rubber bands asst. 1 oz
6. Flexible plastic straws
7. Jumbo straws 7-3/4" (50)
8. Cotton string 430'
9. Plastic funnel
10. Plastic metric ruler (10)
11. Nickel plated scissors 100mm
12. Slinky spring
13. Wooden spoon 10"
14. Tongue depressor
15. Vinyl plastic tubing 1/4" ID ft
16. Alloy tuning fork (256VPS Economy)
17. Wood block 3x4x3/4"
18. Teacher's guide