th thWave - basics (level 6 to 10 )

‘Straw Wave’ activity helps the students to make them understand:[1] Wave is a disturbance (or oscillation) that travels with or without medium.

Out of solid, liquid, and gas – wave travels the fastest in solid, and slowest in gas.

Arrange straws at equal gaps, and make sure it is aligned.

Content:

Key learning:

Safety:

Activity Procedure:

www.life-lab.org

Straw Waves Straw Waves

Cello tape

Plastic straws

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Stick straws at equal gaps on a 3-mere

long sticky tape

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Stick another tape exactlyon top of the previous one Press hard to stick the two tapes firmly

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In the ‘Straw Wave’ activity, wave is produced when tickled at one end of the straw. It appears as if straws are moving, but

in reality wave travels because of disturbances created. When the straw is held at a stretched position, the wave travels

faster as compared to when it is kept in the loose position.

Summary:

Think :

Relate:

References:

www.life-lab.org 2

What is the role of energy in wave travel?

Sound waves require a medium like air to travel. Whereas, light waves don’t require any medium to travel.

[1]- http://en.wikipedia.org/wiki/Wave

Design Procedures - http://www.arvindguptatoys.com/toys/waves.html

Ask a friend to hold one end. Hold the other end of the tape tightly and twist the straws to make a wave.

Twist/ Flick one end to generate waves

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