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Mrs. Williams’ Classroom Edit display name

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This activity will help students understand the behavior of sound waves. In this activity, students will work in groups to use a pump to remove air from bell jar that contains a ringing alarm. As the air is removed, the alarm will become more and more quiet, demonstrating that sound needs a medium in which to travel. Once students have this understanding, they will engage in further activities to explore why sound does not travel in a vacuum (for instance, in space), applications for sound waves as a means for communication, and will develop ideas for applying sound wave technologies.

About my class

This activity will help students understand the behavior of sound waves. In this activity, students will work in groups to use a pump to remove air from bell jar that contains a ringing alarm. As the air is removed, the alarm will become more and more quiet, demonstrating that sound needs a medium in which to travel. Once students have this understanding, they will engage in further activities to explore why sound does not travel in a vacuum (for instance, in space), applications for sound waves as a means for communication, and will develop ideas for applying sound wave technologies.

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About my class

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