tuning forks lab 2

Tuning forks lab

 GUIDING QUESTION/S:

How does density of various solids affect the way the sound waves travel from the tuning fork?

HYPOTHESIS: 

Lukas Hypothesis: I believe that the denser solids decrease the speed of a sound wave. There for the various solids will cause the sound to travel slower through the sound fork, because it takes longer for the sound to get to the fork itself.

Brin’s Hypothesis: I believe that the more density an object has decreases the speed at which the sound wave travels in. Different solids will cause sound waves to travel slower through the sound fork because it will take more time for the sound to get to the fork.

 Exploration:

          Materials: 

1.   Table

2.   Wooden oak door

3.   Lockers made of steal

4.   board (metal with plastic)

5.    Cement Floor

                                   

          Procedure:

1.   First You must get 2 tuning forks of different sizes.

2.   Then you must sit them both against an object.

3.   Put the 2 bottom tips onto the material.

4.   Then listen and record what you hear.

            Data Tables:

                     

Material	Density	Observation
Lockers	7.85 g/cm3	Tuning Fork 384 G: Higher pitch and silent. Tuning Fork 384 G Large: Lower Pitch and Loud.
board	2.8 g/cm3	Tuning Fork 384 G: Lower Pitch , Louder Tuning Fork 384 G Large: Higher Pitch, silent
Table	0.75 g/cm3	Tuning Fork 384 G: Higher Pitch, Silent Tuning Fork 384 G Large: Lower pitch, Louder
Wall	3.12 g/cm3	Tuning Fork 384 G: High Pitched, barley heard Tuning Fork 384 G Large: Lower Pitch heard.
Cement floor	3.12 g/cm3	Tuning Fork 384 G: Higher Pitched, Exactly the same Tuning Fork 384 G Large:Higher Pitched, Exactly the same

            

Brin’s Analysis of Data: 

In this lab I figured out that the Higher pitch of the tuning fork is always more silent than the lower pitch. This is proven through my data table, no mater if the fork is larger or smaller the higher pitch is always more silent. Only once was the pitch the same and what I heard was also exactly the same, this was on the cement floor. 

Lukas Analysis of data:

From the results of this lab I realized that the tuning fork that has the higher pitch will always produce a sound more quite than the one on the lower pitch tuning fork. This Analysis was drawn from the data table above. The data points to the fact that the tuning fork size doesn't matter, the higher pitch sound cannot produce a louder sound that the lower pitch one.

Brin’s Conclusion:

 I believe that the more density an object has decreases the speed at which the sound wave travels in. Different solids will cause sound waves to travel slower through the sound fork because it will take more time for the sound to get to the fork. This is correct because in my data I saw that the more density the lower pitched it was. The most obvious place I figured this out because the lockers created the most sound.

Luka’s Conclusion:

I think that the greater amount of density a object has will negatively affect the speed at which the sound travels from it. The different materials we used caused the sound to travel slower through the tuning fork. I can conclude this because of the fact that the data table supports my conclusion. The best example would be the locker, it created the highest pitch sound because it is less dense then the cement which is dense and created a lower pitch sound.

Brin’s Further Inquiry:  

I believe that I could have had more varieties of things I could use to figure out my answers, to verify if the answers are truly correct.

Lukas Further Inquiry:  For my further inquiry I chose to research the affect of the speed at which the sound travels on the pitch. After researching i found out that those two have nothing to do with each other and that the only thing that affects the pitch is the density of the material.