|MATERIALS: Candle, metal spoon, bowl,
and take notes. Then light your tea candle and with the lights off refer
to your own candle as you go thru the lecture and your notes once again.
Enter your answers in your wiki.
Why do candles form a cup?
What is melting the wax inside the cup?
What happens to the wick as the candle
Where is the hottest part of the flame?
What color is the flame where it gets
the most oxygen?
Where is the coolest part of the flame?
What is the yellow part of the flame?
What does incandescent mean?
In your wiki answer these questions:
1. How does water put out fires?
2. How does CO2 extinguishers put out
3. Why are people instructed to aim extinguishers
at the base of the fire?
4. Given what you know about oxygen and
combustion, why do you think opening a door in a burning building causes
an explosion of the fire outwards (also known as a back draft)?
5. There are two rooms, one filled with
particles of dirt suspended in the air, the other has particles of flour
suspended in the air. A match is lit and the room filled with suspended
flour particles explodes, but the room with dirt doesn't. Why not?
6. Why doesn't a pound of flour sitting
on the ground burn when a match is tossed onto it, but a room of suspended
flour particles explodes?
7. Why does the alcohol for flambee desserts
need to be heated or the alcohol won't burn?