Lab Report

Guiding question: How does the density of a material affect the properties of sound travelling from a tuning fork?

Hypothesis: We think that the more dense the medium, the lower pitch it will be.

Material:

• Tuning fork (320E)
• Window
• Locker
• Table
• Aquarium
• Wall

Procedure:
Step 1: First of all you will need a partner to help you with the lab.
Step 2: When you have a partner, gather all of your materials that you will need to complete this test.
Step 3: After gathering all of your materials needed for the test start the lab.
Step 4: Bang the tuning fork on a table and then put it standing on it and put your head to hear the sound of it through the table, repeat this step with all the materials you chose to experiment with.

Record and Analyze:

Medium	Density	Sound
Wall	.2 grams	Low pitch with no vibration
Table	.65 grams	Medium vibration with medium pitch
Aquarium	2.5 grams	High pitch with no vibration
Window	2.5 grams	High Pitch with lots of vibration
Locker	3.9 grams	Medium vibration with high pitch

Conclusion:

In this lab I learnt that the denser the object you put on the tuning for the higher pitch you will hear. This proves my hypothesis to be correct, which was: we think that the more dense the medium, the lower pitch it will be.

Further Inquiry:

If I were to do this experiment again I would see which sound lasts for longer and which one is loudest because in our experiment all we recorded was the pitch and vibrations. I also want to try the experiment with different tuning forks so that I would have a bigger variety of information. To this if I were to do this experiment again I would use more mediums.

Bibliography:

http://www.wolframalpha.com/