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Do you wish you could have your very own phone? All you have to do is follow these steps to learn how to make your own tin can and string (or cup and string) telephone. This craft also makes for a good science project to learn about how sound travels.
Steps
Community Q&A
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QuestionWhat can I do if I do not hear it?Community AnswerPull the string tighter. Often, we can't hear the sound because the string is too loose.
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QuestionWe used a piece of yarn and two tin cans, why isn't it working?Community AnswerYarn has a lot of loose threads that works as a vibration dampener. A taut string will carry the vibration much more cleanly.
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QuestionDoes the size of the cup matter?Community AnswerNope, cups of any size should work equally well.
Video
Tips
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You can hear your partner better if the string is tighter.Thanks
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Using fishing wire instead of string helps sound travel a lot better.Thanks
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Can you make "phone calls" around corners? Try it and see.Thanks
Warnings
- Try to use cans that do not have a sharp edge where the lid of the can was removed.Thanks
- Be careful when you punch the hole in the can.Thanks
Things You'll Need
- Piece of string
- 2 clean food (soup) cans (empty) or cups.
- Tool for creating holes
References
- ↑ https://www.teachengineering.org/activities/view/cub_sound_lesson02_activity1
- ↑ https://ext.vt.edu/content/dam/ext_vt_edu/topics/4h-youth/makers/files/ww1-telephones.pdf
- ↑ https://ext.vt.edu/content/dam/ext_vt_edu/topics/4h-youth/makers/files/ww1-telephones.pdf
- ↑ https://www.teachengineering.org/activities/view/cub_sound_lesson02_activity1
- ↑ https://www.nasa.gov/wp-content/uploads/2023/09/scan-activities.pdf
- ↑ https://ext.vt.edu/content/dam/ext_vt_edu/topics/4h-youth/makers/files/ww1-science-behind-it-telephones.pdf
About This Article
Reader Success Stories
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"This article had great tips such as making the string tighter. When I tried this, it worked great! The article was also very detailed and had step by step instructions. Love it!"..." more