Page 64 - Science Course 3 (Book 2)

Sound Waves Mo10-L3a: What are the Properties of
Sound Waves?
Lesson 3

pitch

The perception of how high or low a sound is;
related to the frequency of a sound wave.
In this topic, you will learn the following
lessons:
Mo.10–L3a: What are the Properties of Sound
Waves?

What are the Properties of Sound loudness
Mo10–L3a
Waves? the unit used to measure sound intensity or
loudness.
KEY CONCEPTS:
1. What are some properties of sound waves?
2. How do your ears enable you to hear sounds?

Vocabulary A-Z

Let us learn some vocabulary

compression

region of a longitudinal wave where the particles
of the medium are closest together.

rarefaction Let’s Begin
region of a longitudinal wave where the particles
of the medium are farthest apart.
What are Sound Waves?

Sound waves are longitudinal mechanical waves that
must travel through a medium.

Sound waves are vibrations that the ear can detect.

The human ear is most sensitive to frequencies
between 1,000and 4,000 Hz.

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