Multiple choice

The teardrop-shaped candle flames in a menorah are created by this cycle of upward moving air.

  1. rise of cooler oxygen

  2. a convection current

  3. a water vapor current

  4. the sinking of carbon dioxide

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

As the air around the flame is heated, it becomes less dense and rises. This creates a convection current that pulls fresh oxygen toward the base and shapes the flame.