Answer:

Change how much of the ruler is hanging over the edge of the desk and experiment with the different notes that are made. The "pitch" is how high or low the note is. A longer ruler hanging over the edge makes a lower pitch; a shorter ruler gives a higher pitch.

Explanation:

Answer:

Change how much of the ruler is hanging over the edge of the desk and expirement with the different notes that are made.

The "pitch" is how high or low the note is.

A longer ruler hanging over the edge makes a lower pitch a shorter ruler gives a higher pitch.

Explanation:

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Im not sure if my answer is correct but hopeithelps.☺