The Spark Times Inc.: Daily News for Kids

The Spark Times Inc.: Daily News for Kids

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The Spark Times Inc.: Daily News for Kids
The Spark Times Inc.: Daily News for Kids
Project 7: Magic Hair Hygrometer

Project 7: Magic Hair Hygrometer

Make a Weather-Predicting Arrow!

Jul 25, 2025
∙ Paid
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The Spark Times Inc.: Daily News for Kids
The Spark Times Inc.: Daily News for Kids
Project 7: Magic Hair Hygrometer
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Hello Spark Times readers,

Is the air dry or damp today? Let your hair tell you!
In this weather-sensing experiment, you’ll build your very own hygrometer using just cardboard, paper, and a single strand of hair. As the air gets wetter or drier, the hair will stretch or shrink, moving your arrow like magic. It's a fun, zero-cost way to track humidity like…

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