Question: Why doesn't the candle extinguish? Please answer the question within 15 words.
Clues:
1. A lit red candle is standing outside a transparent glass.
2. A hand is pouring a clear liquid from a plastic pitcher into the glass.
3. The sequence of four images shows the level of the clear liquid rising in the glass.
4. The candle flame remains lit throughout the process of the liquid level rising.
5. In the later images, the water level is visibly higher than the base of the flame.
6. The flame appears to be burning on the surface of the liquid in the glass.
Answer: The candle is outside the cup, not inside.
Category: Physics