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# The effect of room temperature on how fast a candle burns

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## Ahmed Moutwakil

on 29 April 2014

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#### Transcript of The effect of room temperature on how fast a candle burns

How Will Room Temperature Affect How Fast a Candle Burns?
Question

Hypothesis
Candles are very useful and efficient. They're used for light in power outages or when there is no electricity available. Candles are made of many different materials, but most are made of paraffin wax. Other materials are soy wax, beeswax, plant wax, and animal fat. The wax is like fuel to the candle; it keeps the candle burning. The way a candle works is when you light the candle, the wax around the wick will melt due to the heat of the flame. The capillary action of the wick will absorb the melted wax and pull it upwards. When the wax is exposed to the flame, it will vaporize and the wax vapor burns. The wick doesn't burn as quick because the vaporizing wax helps cool the wick and protect it. Candles are made in various sizes, scents and colors. They're used in spas and aromatherapy. They're also used in religious ceremonies and on birthday cakes.
Background Information
(Related to the hypothesis)
I.V. - The Room Temperature
D.V. - How Fast the Candle Burns
Number of Trials - 3
Constants - The type of candle, The width of the candle, the height of the candle
Levels of the I.V. - Cold Room Temperature: 0°C,
Hot Room Temperature: 25°C Control - The Hot Room Temperature
1. I put an air conditioner in a room until the
room was 0°C (32°F). This was the cold room.
2. I put a candle in the cold room
3. I lit the candle and timed how long it took for it to melt completely.
4. I repeated steps 2 and 3 two more times in the same room
5. I recorded the data.
6. I put a heater in a room until the room was 25°C (77°F). This was the hot room.
7. I put a candle in the hot room.
8. I lit the candle and timed how long it took for it to melt
completely
9. I repeated steps 7 and 8 two more times.
10. I recorded the data.
Procedure
Data/Results
In this lab, I was trying to find if a candle burned faster in a hot room or a cold room. I found out that the candle did burn faster in a hot room. My hypothesis was supported because the cold candles burned slower than the hot candles, as my hypothesis said. A possible error that could have occurred was that I had different materials for both candles, the room temperature changed during the time it took to melt, and I started the timer too late or too early. A possible explanation I could give for my findings is that the cold candle takes more energy to burn, that's why it was slower. I think the results happened the way they did because the difference in the temperatures was high. Something that surprised me would be the huge gap in time between the cold candles to melt and the hot candles to melt which was 34 minutes. I could improve this experiment by having more candles instead of 3 and probably repeating the experiment 4, 5 or even 6 times instead of 3. This experiment relates to our world because if we ever had a power outage or no electricity, we would use candles, and to make it last longer we would put in a cold room this experiment could also make us spend less money on candles. I wonder if the material of a candle affects how fast a candle burns?
Discussion/Conclusion
1. http://home.howstuffworks.com/question267.htm

4.http://en.wikipedia.org/wiki/Candle
Literature Cited
The Effect of Room Temperature on How Fast a
Candle
Burns
Ahmed Moutwakil
Hamilton Middle School
If we put a candle in a cold room, and another in a hot room, then the candle in the cold room will burn slower because the candle will require more energy to burn.
Investigation Design
Hot Room Table
Candle #
Time taken to melt
1
2
3
40 min. 31 sec.
39 min. 47 sec.
40 min. 22 sec.
1
3
2
1 hr. 13 min. 24 sec.
1 hr. 15 min. 07 sec.
1 hr. 14 min. 32 sec.
Cold Room
Table

Based on these results, the Cold Room candles took longer to melt than the Hot Room Candles. Also, the cold candle's time were around 1 hour and 13 - 15 minutes while the Hot candle's time were around 39 - 40 minutes. The average time to melt for the Hot Room Candles is 40 minutes 0 seconds, and the average time for the Cold Room Candles is 1 hour 14 minutes and 17.67 seconds. The difference is about 34 minutes.

I.V. = Independent Variable
D.V. = Dependent Variable
Cold Room
Hot Room
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