Sound: Pitch and Volume (Part 2)

What You'll Learn

Sound waves have properties including amplitude (loudness), frequency (pitch), and wavelength. Higher frequency means higher pitch. Greater amplitude means louder sound.

Key Words

prototype
design

Materials Needed

pennies
plastic wrap
cardboard
tape
scissors

Safety First

Protect your work surface with newspaper or plastic.

Steps

Step 1 — Read

Read and learn: Sound waves have properties including amplitude (loudness), frequency (pitch), and wavelength. Higher frequency means higher pitch. Greater amplitude means louder sound.

Step 2 — Do

Repeat the experiment two more times for accuracy.

Step 3 — Observe

Observe what happens and describe it in detail.

Step 4 — Record

Record your observations in your science journal.

Check Your Understanding

Question 1

1 of 3

Can sound travel through a vacuum?