Lesson starters. wobbling bubbles. 2, Sound through a medium :

This short clip is ideal for use as a lesson starter in KS3/4 science and features a demonstration of how sound needs a medium to pass through. The presenter attaches a sound generator to a loudspeaker. He holds a bubble in front of the speaker, and turns the volume down and up. At low volume, the b...

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Bibliographic Details
Corporate Author:	Teachers TV (Television Channel) (Producer)
Format:	Video
Language:	English
Language Notes:	In English.
Published:	[England] : Teachers TV/UK Department of Education, 2009.
Series:	Teachers TV
Subjects:	Science > Study and teaching > Great Britain. Sounds > Study and teaching. Sciences > Étude et enseignement > Grande-Bretagne. Bruits naturels > Étude et enseignement. Science > Study and teaching. Great Britain. Online media. Instructional television programs. Émissions pédagogiques télévisées.
Online Access:	Connect to this streaming video (Alexander Street Press)

Description
Summary:	This short clip is ideal for use as a lesson starter in KS3/4 science and features a demonstration of how sound needs a medium to pass through. The presenter attaches a sound generator to a loudspeaker. He holds a bubble in front of the speaker, and turns the volume down and up. At low volume, the bubble moves slowly. At high volume, the bubble wobbles a lot. The question for students to answer is: What makes the bubble move? See the accompanying teachers' notes for a full explanation of the science underpinning the demonstration, plus suggested extension activities.
Item Description:	Title from resource description page (viewed Jan. 9, 2014).
Physical Description:	1 online resource (1 min.).
Playing Time:	00:01:15
Audience:	For High School audiences.
ISBN:	9781503420182 1503420183