3-2-1 Contact — Season 1, Episode 3: Noisy/Quiet: How People & Animals Use Sound

Episode synopsis

Lisa goes to Hawaii to see how dolphins use sonar. Another segment sees sonar of bats. Trini sees an ultrasound apparatus at work. The Bloodhound Gang finds a wrinkle in The Case of Princess Tomorrow.

About 3-2-1 Contact

3-2-1 Contact is an American science educational television show that aired on PBS from 1980 to 1988, and an adjoining children's magazine. The show, a production of the Children's Television Workshop, teaches scientific principles and their applications. Dr. Edward G. Atkins, who was responsible for much of the scientific content of the show, felt that the TV program wouldn't replace a classroom but would open the viewers to ask questions about the scientific purpose of things.

More episodes from Season 1

• E1Noisy/Quiet: Production & Processing of Sound
• E2Noisy/Quiet: The Ear
• E4Noisy/Quiet: Music
• E5Noisy/Quiet: Range of Vibration
• E6Forces and Motion
• E7Forces and Fields
• E8Forces: Buoyancy and Gravity
• E9Forces and Machines
• E10Forces: A Spectacle of Forces
• E11Growth/Decay: Sex and Seeds
• E12Growth/Decay: Human Growth
• E13Growth/Decay: Decay