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. Bethan carries out an experiment with a burning candle. Bethan places a burning candle under a beaker and times how long it takes to go out. She then repeats the experiment with different amounts of oxygen.
Her results are shown below:-
|
Amount of Oxygen (cm3) |
Time taken for candle to go out (seconds) |
|
|
100 |
150 |
|
|
225 |
||
|
200 |
300 |
(a)
draw a line graph of Bethan’s results. Marks will be awarded for labelled axis, a good scale, a line of best fit and a title. (5 marks)
(b) What is the independent variable in this experiment?
_________________________________________ (1 mark)
(c) What is the dependent variable in this experiment?
_________________________________________ (1 mark) (d) Write a conclusion for the experiment. (1 mark)
_____________________________________________________________
_____________________________________________________________
