Once you have read the instructions below:
Purpose of Experiment
When a burning candle is trapped underneath a jam jar, the candle lasts for a while before going out.
Do candles inside larger jars burn for longer?
Does the shape of the jam jar influence the time the candle lasts?
Instructions
Take a Tea Light candle (about 4cm in diameter), as many clean jam jars as you can get hold of and a stopwatch. Set light to the candle and place one jam jar over the candle - start the stopwatch immediately. Stop timing as soon as the flame disappears. (If you can, try and estimate the height of the flame when the candle is burning.)
Measure the volume of the jar with water and a measuring cylinder. If you want to repeat the experiment, dry the jar and make sure that it is full of 'fresh' air.
Click on the picture above to open up a results form. You will need a Flash enabled browser to enter the data from your experiment. When you have entered your data you will be able to download a sample of results from the whole of our database.
To retrieve your data see below.
Good luck!
Teachers resources
For more details see Teachers' Notes: