What Makes a Sound High or Low?

What Makes a Sound High or Low?: Grade 4 Science Worksheet

Why do bells ring? Every sound starts with something vibrating, and how fast it vibrates decides whether the sound is high or low. Students decide whether a plucked guitar string, a bell held still, and a drum make a sound, then use wave lines to tell whether a small bell, a big bell, a tuba, and a mockingbird have a high or low pitch.

Key Science Vocabulary

• vibrate: to shake back and forth very fast
• sound: energy made by vibrating objects
• pitch: how high or low a sound is
• high pitch: a sound made by fast vibrations, like a whistle
• low pitch: a sound made by slow vibrations, like a big drum

What Students Do

• Read a short teach box on vibration and pitch
• Part A: guitar, bell, and drum rows; circle sound or no sound
• Part B: four cards with wave lines; circle high or low pitch
• Answer key with red reason lines

Standards

Florida SC.4.P.10.3: Investigate and explain that sound is produced by vibrating objects and that pitch depends on how fast or slow the object vibrates. Builds toward NGSS 4-PS4-1 (waves have patterns of amplitude and wavelength).

Where It Fits in Grades 3 to 8

In grade 1, students learn that vibrating materials make sound. Grade 4 links vibration speed to pitch. In middle school, this becomes waves, frequency, wavelength, and how sound travels through matter.

Teaching Tip

Stretch a rubber band over a box and pluck it, then stretch it tighter and pluck again. Students hear the pitch go up as the band vibrates faster. Prints clearly in black and white and takes 8 to 10 minutes.