1. Drawing a line graph

2. A 2-D diagram of the apparatus used in the scientific investigation open air hole Close d air hole closed air hole

3. Line graphs show the relationship between experimental data. Time (minutes) Temperature ( o C) yellowblue 023 127 23437 34146 44755 55362 65770

4. Use a ruler, pencil and rubber

5. Rule the axis to occupy as much of the graph paper as possible

6. Label the axes including the units of measurement Put the dependent variable on the ‘vertical axis’ and the independent variable on the ‘horizontal axis’

7. Independent variable – which variable will be changed? Dependent variable - which variable will have to be measured or observed in order to get some data or information from the investigation? Yellow or blue flame The rate of heating up water measured in temperature ( 0 C)

8. vertical range 0-70 o C horizontal range 0-6 minutes Time (minutes) Temperature ( o C)

9. Time (minutes) Temperature ( o C) Put the scale on the axis by counting the spaces and dividing by the range to get each division. THE SPACES BETWEEN EACH TICK MARK MUST BE EQUAL 70 o C = 14 spaces 10 o C = 2 spaces “go up the vertical axis in multiples of 10 (0,10,20….70)” 60 30 40 20 10 0 50 70

10. Time (minutes) Temperature ( o C) THE SPACES BETWEEN EACH TICK MARK MUST BE EQUAL 6 minutes = 12 spaces 1 minute = 2 space “go across the horizontal axis in multiples of 1 (0,1,…6)” 60 40 20 1 0 2 6 3 4 5

11. Time (minutes) Temperature ( o C) plot the first point (0,23) 60 40 20 0 2 6 4 Time = 0 Go up the vertical axis until you reach 23 and put a cross at this point. (0,23)

12. Time (minutes) Temperature ( o C) plot the second point (0,27) 60 40 20 0 2 6 4 Time = 1 Go up the vertical axis until you reach 27 and put a cross at this point. (1,27)

13. Time (minutes) Temperature ( o C) plot the second point (0,27) 60 40 20 0 2 6 4 Time = 2 Go up the vertical axis until you reach 37 and put a cross at this point. (2,37)

14. Time (minutes) Temperature ( o C) plot the rest of the points 60 40 20 0 2 6 4 346 455 562 670

15. Time (minutes) Temperature ( o C) join the points with the line of best fit 60 40 20 0 2 6 4