Lower a glass over the candle
The rising water experiment works because of the difference in atmospheric pressure. Let’s dive deeper into this. When you place a glass over a candle, the flame heats the air inside. When hot air expands, it takes more space. You probably know that, if you keep a glass over the candle, then at some point the flame will fade out due to the lack of oxygen. At that moment, the air inside the glass will cool down and free up some space. This event creates a pressure that is lower (a vacuum) than the one outside the glass. As a result of the things that happened inside the glass, the outside air pushes the water into the glass. It will stop eventually when the air pressure is equal both inside and outside of the glass.