The Case of the Barking Dog, Episode 1
A woman places a tuning device beside a girl's ear

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 is made and how the scientific method can be used to solve a problem about sound. 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 gather information about sound to hypothesize why dogs are barking throughout their town. The detectives learn that sound is created by vibrations and that the length of a pipe determines the pitch of the sound. The detectives also discuss how to collect and analyze data efficiently.

The Case of the Barking Dog, Episode 1
Duration: 15 minutes 05 seconds
> View QuickTime  [50MB]

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 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 Effect of Sound Levels on the Human Ear
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