Sound: Pitch and Volume (Part 3)

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
constraint

Materials Needed

paper clips
rubber bands
string
cups
aluminum foil
ruler

Safety First

Keep small objects away from young children.
Work in a well-ventilated area when using vinegar or other strong-smelling substances.
Dispose of materials properly after the experiment.

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?