Does the thickness of a candle influence how quickly it burns?
Peter Marendy, Wes Stanton, Saravanan Somasundaram
8A
25/03/2015
Figure 1: The wide candle burning during the experiment
Introduction: This experiment aims to discuss whether the thickness of a candle influences the time of burning. A candle burns by melting the wax near the wick. This liquid wax is then drawn up the wick by capillary action. The heat of the flame then vaporises the wax. Previous results showed that wider candles burnt slower than thinner candles.
Aim: The aim of this experiment was to find out whether the thickness of a candle has an effect on the time taken for it to burn down.
Variables: Independent: The width of the candle Dependent: The height of the candle
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This was because the flame would have to burn through less wax to be able to move down.
Equipment/Materials:
Wide candle
Thin candle
Matches
Ruler
Timer
Method:
1: The 2 candles were stood up as shown in figure 2.
Figure 1
2. Both candles were measured with the ruler.
3. A timer was set for 2 minutes and the candles were set alight.
4. At 2 minutes, the timer was restarted and the candles were measured. This was repeated over the course of 30 minutes.
5. At 30 minutes, the candles were blown out and measured one last time.
Results
Figure 3: Results table
Height of candles
Time (T) minutes Wide candle height (W) CM Thin candle height (F) CM
0 7 18
2 7 17.5
4 7 17
6 7 16.8
8 7 16.8
10 7 16
12 7 15.8
14 7 15.5
16 7 15
18 7 14.5
20 7 14
22 7 13.5
24 7 13
26 7 12.5
28 7 12
30 7
- After: Only the top of the toothpick was burnt. The candle remains in the same shape as it was at the beginning of the test.
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