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

criteria
iteration
wavelength

Materials Needed

tape
scissors
straws

Safety First

Adult supervision recommended.
Do not taste any materials.
Wear safety goggles when mixing liquids.

Steps

Step 1 — Read

Study the diagram and label the parts you recognize.

Step 2 — Do

Build a working anemometer using paper cups and straws. Calibrate it by counting rotations in a known wind speed.

Step 3 — Observe

Observe what happens and describe it in detail.

Step 4 — Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

Can sound travel through a vacuum?