A candle is burning. You blow hard and the flame gets extinguished. Why? Is it because of the carbon dioxide we exhale when we blow out? That can’t be the reason because a gust of wind can also blow out the candle and the wind carries a lot of oxygen along with it.
The reason why the candle goes out is that when you blow hard you remove the warm air around the flame. Cooler air takes its place. This lowers the temperature of the burning wax to below its ignition point. The wax stops burning and the candle goes out.
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