eslam

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Name : Islam
Grade: 8
Materials
1. Sand
2. Speakers
3. Iron box
4. Nails
5. Box tissue
steps
• Bring the iron box and make a hole in it with
the nail and make the nail touch the top of the
speakers and the sand will move
Hypothesis
The sand will move in a certain pattern
Conclusion
• The sand moved from the vibration of the
sound produced from the speakers the shape
of represent the sound waves
Observation
• During doing the experiment it proves that we
can see sound waves
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