Black Pepper Science Trick

Here's another easy but impressive science lesson that's been around for a long time. Easy to replicate both at home & in the classroom. All you need is: Black Pepper Bowl or plate Water Dish Detergent Method: - Pour water into a plate or bowl. -Shake some pepper onto the water. -Dip your finger into the pepper and water. Nothing happens. - Dip a different finger in (secretly dip it into some dish detergent before doing the trick). -Watch as the pepper rushes to the edges of the bowl. Explanation: When you add detergent to water the surface tension of the water is lowered. Water usually beads up (you can show this to students by dropping some water on a coin) but when the surface tension is lowered, the water wants to spread out. As the water spreads out/flattens in the bowl, the pepper that is floating on top of

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