Amazing 9 Layer Density Tower – SICK Science! | Science Experiments | Steve Spangler Science

Density differences cause objects to “float” in liquids that are already stacked on top of each other.

With this science-magic trick, you’ll put a new spin on our famous Density Column demonstration. First, you’ll discover how to stack nine layers of liquids on top of each other. That alone looks really cool, but then you take it up a notch by making different solid objects “float” in the middle of all those cool looking stacked liquids. You’ll surprise yourself and your friends with what you can do with the 9-Layer Density Tower.

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Homemade Hand Warmer | Science Experiments | Steve Spangler Science

Here’s a twist on the classic chemical hand warmers you can buy for you to research and improve.

If you’ve been outdoors when it’s really cold, there’s a good chance you’ve either used these yourself or wished you had. You can experience a variation on the science found inside a commercial warmer with some pretty basic materials. You’ll discover how an everyday chemical reaction like rusting is used to keep your digits toasty. This experimental version of the hand warmer is offered as a test idea and not as a definitive solution. You’re encouraged to share your science fair results online.

Source: Homemade Hand Warmer | Science Experiments | Steve Spangler Science