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Activity 2: Sound can be bundled
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Category: AV-media (sound)
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Target Group: 3 to 6 year old children in nursery school
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aims: The children realize that sound waves are
transmitted for example through the bundled air in the cardboard tube and in
funnels or through a piece of string and are thrown back by hard surfaces.
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Where? the groups
room
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How
long? approx. 45 minutes
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What?
experiments
examining sound
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Preparation
Materials:
cardboard tubes, pieces of
string, spoons, tubes, funnels, yoghurt cups or tin cans, thin thread,
clocks, plates, books
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Steps:
Cardboard tubes bundle the sound
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Plate reflects the sound
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"telephoning" with a
tube
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Piece of string transmits sound
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Making a tin can telephone
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Telephoning with it
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Scientific Explanation:
Free Experimenting 1
A cardboard tube bundles
the air. Sounds grow louder.
Demonstration 1 Sound waves are
reflected by hard surfaces (plate) and travel to the ear through the second
tube.
Free Experimenting 2
The air bundled in the tube
transmits sound. A telephone works in a similar way.
Demonstration 2
Sounds
is being transmitted into the ear by the string.
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Attention!
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Source: Ardley, Neil und Burnie, David:
Spannende Experimente aus Natur und Technik. Bindlach 1998
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