静電気ってなぜパチッとくるの？
Have you ever felt a small shock when you touch a doorknob in winter? That is called <em>static electricity</em>. When we move, our clothes and body can collect tiny electric charges. This happens more often in dry air. When we touch something metal, like a doorknob, the electricity quickly moves from our body to the metal. That sudden movement causes a shock. It feels like a little spark and makes a zap sound!
