Why Do Some Metals Sparkle When They're Rubbed?

Some metals make a glowing, sparkling effect when you rub them because they give off tiny flashes of light, like little fireworks! Imagine rubbing a piece of metal and seeing it light up with tiny sparks. It's kind of like how friction can start a fire if you rub two sticks together fast enough.

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Examples

  1. Rubbing a piece of zinc on your sleeve gives off tiny glowing sparks, like magic confetti.

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