Classroom mode
Run it in class
Why does a candle flame die under a glass but burn forever in the open?
Show of hands — before you project anything
Before we drop the glass: predict which candle goes out first and explain why. Then we'll watch the trapped air drain.
- A Way more than you'd guess
- B About what you'd guess
- C Way less than you'd guess
Count the votes out loud. Hold them to it — then watch.
Project it (fullscreen)
Discussion prompts
- Before we drop the glass: predict which candle goes out first and explain why. Then we'll watch the trapped air drain.
- Predict what changes if we use a much bigger glass. Does the flame last longer, shorter, or the same — and why?
- A flame goes out under a glass but its wax is barely touched. What does that prove about air being part of fire?
Where it shows up in real life
- Putting a lid on a small pan fire on the stove to smother it
- Cupping your hands around a match to shield it from the wind
- Blowing out birthday candles versus fanning a campfire to make it roar
A prediction-first worksheet — no answer key.
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Why does a candle flame die under a glass but burn forever in the open?
Predict — what do you think will happen, and why?
Talk about it
- Before we drop the glass: predict which candle goes out first and explain why. Then we'll watch the trapped air drain.
- Predict what changes if we use a much bigger glass. Does the flame last longer, shorter, or the same — and why?
- A flame goes out under a glass but its wax is barely touched. What does that prove about air being part of fire?