Questions
The first scientific question you I am investigating is how is sound made
The second scientific question I am investigating is what determines the pitch of a sound.
Data/Evidence
The large fork vibrate fewer times than the small tuning fork.
The large tuning fork had a lower pitch.
The drum vibrated when played.
The violin vibrated when played.
The ukulele vibrated when played.
The tuning forks Vibrate when played.
The cymbal vibrate when played.
The singer’s vocal cord vibrate when she sang.
My throat vibrated when I hummed.
Analysis
All of the instrument vibrate when making sound.
the small tuning tuning fork vibrated about 2 time faster than the large tuning fork
Claims
Sound is caused by vibration.
The higher the frequency of vibration, the higher the pitch.
Reasoning
My experiment suggests that sound is caused by vibration because all of the instruments vibrate when making sound.
My experiment suggests that the higher the frequency of vibration, the higher the pitch because the higher tuning fork vibrated faster.
Significance
if i want to make a machine that can make any sound, it needs to be able to have vibration.
Anaignacio 