Pitch
Science: Year 3 & 4 National Curriculum, topic 9.2.1
Pitch
Pitch is how high or low a note or sound seems.

High pitch sounds
- Most small dogs have a high pitched bark.

Low pitch sounds
- Most large dogs have a low pitched bark.
What Makes High and Low Pitched Sounds
Pitch is how high or low a note or sound seems.

What affects the pitch?
- The pitch of the sound produced by an object is affected by:
- The size of the object.
- The length of the object.
- The tightness of the object.

Guitar strings
- Guitars have 6 strings.
- Plucking each string produces sounds at different pitches.

The pitch of each string
- Each string produces sounds at different pitches because:
- Each string is a different thickness.
- Each string has a different tightness.
- The pitch of each string can be changed by tightening the strings.
Test yourself on Pitch
What is pitch?
What affects the pitch of the sound something makes?