The Effect of Sound Levels on the Human Ear
Two students stare at a mannequin

The information in this video was accurate as of the original publication date.

Audience: Educators and Students
Grades: K-8
Year: 2000


This NASA video segment explores how sound affects people. The segment is part of the NASA SCIFiles program, which features the Tree House Detectives, a group of young students who work together to solve everyday problems. In this segment the detectives try to solve the problem of barking dogs in their town. The detectives visit a psychoacoustician and learn that people are bothered more by high-frequency sounds than low-frequency sounds and that dogs hear higher frequencies than humans.

The Effect of Sound Levels on the Human Ear
Duration: 1 minute 58 seconds
> View QuickTime  [6MB]


This video clip is part of the NASA SCIence Files™ The Case of the Barking Dogs DVD that may be ordered from the Central Operation of Resources for Educators, or CORE  →.

Other video learning clips in this series:
The Case of the Barking Dog, Episode 1
The Case of the Barking Dog, Episode 2
The Case of the Barking Dog, Episode 3
The Case of the Barking Dog, Episode 4
Problem-Solving Using the Scientific Method
Investigating the Properties of Sound
Following the Scientific Method: Collecting, Organizing and Analyzing Data
Our Ears and How They Work
The Hearing Ability of Dogs
NASA's Anechoic Chamber for Sound Research
Experimenting With Echoes
Variables That Affect the Speed of Sound
Understanding Sonic Booms
How and Why Bats Use High-Frequency Sounds to Navigate
Demonstrating the Difference Between High- and Low-Frequency Sounds