TeachEngineering
Teach Engineering: Measuring Distance With Sound Waves
Students learn about sound waves and use them to measure distances between objects. They explore how engineers incorporate ultrasound waves into medical sonogram devices and ocean sonar equipment. Students learn about properties, sources...
Texas Education Agency
Texas Gateway: Physics of Hearing: Hearing
By the end of this section, you will be able to define hearing, pitch, loudness, timbre, note, tone, phon, ultrasound, and infrasound; compare loudness to frequency and intensity of a sound; and identify structures of the inner ear and...
Physics Classroom
The Physics Classroom: Sound Properties and Their Perception
The concept of pitch and frequency is covered in this tutorial. Learn what frequency and pitch are, the difference between infra sound and ultrasonic frequencies, and how pitch is related to the frequency of a sound.
Read Works
Read Works: Elephant Tales
[Free Registration/Login Required] An informational text explaining how elephants communicate. A question sheet is available to help students build skills in reading comprehension.
CK-12 Foundation
Ck 12: Physical Science: Frequency and Pitch of Sound
[Free Registration/Login may be required to access all resource tools.] Explores the pitch of sound, how it relates to the frequency of sound waves, and what infrasound and ultrasound are.
Texas Education Agency
Texas Gateway: Physics of Hearing: Glossary
This is a glossary of terms and definitions used in Chapter 17: Physics of Hearing from the AP Physics online text.
Physics Hypertextbook
The Physics Hypertextbook: The Nature of Sound
Study the details of sound from characteristics to speed, ultrasound, infrasound, and other aspects of sound waves.
Other
Sweetwater.com: What Is Infrasonic?
This resource features a basic definition of infrasonic. It also explains the difference between infrasonic and subsonic.