Tuning Fork

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. Cemeny Floor

Procedure:

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

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:


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.


Luka’s Further Inquiry:

Earthquake safety

To Make my house much more earthquake friendly I will have to:

1. reconstruct my whole house because it is made of glass.

2. it would need to tie my things to the wall.

3. if an earthquake was to occur my family would need to go next to the elevator.

4. If we would not have enough time we would need to drop cover and hold.

5. we would also need an emergancy kit that contains water, food and waki tokis (but I

already have that.)

6. After the earthquake we would need to try to regroup.