Volume-Time Graphs – Equations – Card Match In this activity students work individually or in groups to match questions and answers. ‘Quick Cut’ – Choose the questions/slides you wish to use and delete others. Sets of questions can then be easily guillotined to save time. One-sheet sets of cards are also included for students to cut out themselves.

Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts - Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

Match each Graph with a Volume and a Rate. How do we find the rate at which the volume is increasing?

Half Answers

A 10 L/min 10 L/min 10 L/min 10 L/min 6 litres at 6 seconds 40 35 30 25 20 Volume (L) 15 10 5 1 2 3 4 5 6 7 8 Time (Minutes) 10 L/min 10 L/min 10 L/min 10 L/min 6 litres at 6 seconds 6 litres at 6 seconds 6 litres at 6 seconds 6 litres at 6 seconds 10 L/min 10 L/min 10 L/min 10 L/min 6 litres at 6 seconds 6 litres at 6 seconds 6 litres at 6 seconds 6 litres at 6 seconds

B 6 litres per minute 6 litres per minute 6 litres per minute 16 14 12 10 8 Volume (L) 6 4 2 1 2 3 4 5 6 7 8 Time (Minutes) 6 litres per minute 6 litres per minute 6 litres per minute 6 litres per minute 1 litre at 10 seconds 1 litre at 10 seconds 1 litre at 10 seconds 1 litre at 10 seconds 6 litres per minute 6 litres per minute 6 litres per minute 6 litres per minute 1 litre at 10 seconds 1 litre at 10 seconds 1 litre at 10 seconds 1 litre at 10 seconds

C 4 litres/min 4 litres/min 4 litres/min 4 litres/min 40 35 30 25 20 Volume (L) 15 10 5 1 2 3 4 5 6 7 8 Time (Minutes) 4 litres/min 4 litres/min 4 litres/min 4 litres/min 30 litres at 2 m 30s 30 litres at 2 m 30s 30 litres at 2 m 30s 30 litres at 2 m 30s 4 litres/min 4 litres/min 4 litres/min 4 litres/min 30 litres at 2 m 30s 30 litres at 2 m 30s 30 litres at 2 m 30s 30 litres at 2 m 30s

D 5 litres per minute 5 litres per minute 5 litres per minute 40 35 30 25 20 Volume (L) 15 10 5 5 10 15 20 25 30 35 40 Time (Minutes) 5 litres per minute 5 litres per minute 5 litres per minute 5 litres per minute Starting volume = 10 L Starting volume = 10 L Starting volume = 10 L Starting volume = 10 L 5 litres per minute 5 litres per minute 5 litres per minute 5 litres per minute Starting volume = 10 L Starting volume = 10 L Starting volume = 10 L Starting volume = 10 L

E 333 ml per minute 333 ml per minute 333 ml per minute 16 14 12 10 8 Volume (L) 6 4 2 1 2 3 4 5 6 7 8 Time (Minutes) 333 ml per minute 333 ml per minute 333 ml per minute 333 ml per minute Starting volume = 6 L Starting volume = 6 L Starting volume = 6 L Starting volume = 6 L 333 ml per minute 333 ml per minute 333 ml per minute 333 ml per minute Starting volume = 6 L Starting volume = 6 L Starting volume = 6 L Starting volume = 6 L

F 1 litre/min 1 litre/min 1 litre/min 1 litre/min 16 14 12 10 8 Volume (L) 6 4 2 5 10 15 20 25 30 35 40 Time (Minutes) 1 litre/min 1 litre/min 1 litre/min 1 litre/min Starting volume = 2 L Starting volume = 2 L Starting volume = 2 L Starting volume = 2 L 1 litre/min 1 litre/min 1 litre/min 1 litre/min Starting volume = 2 L Starting volume = 2 L Starting volume = 2 L Starting volume = 2 L

G 500 ml per minute 500 ml per minute 500 ml per minute 16 14 12 10 8 Volume (L) 6 4 2 5 10 15 20 25 30 35 40 Time (Minutes) 500 ml per minute 500 ml per minute 500 ml per minute 500 ml per minute Starting volume = 0 L Starting volume = 0 L Starting volume = 0 L Starting volume = 0 L 500 ml per minute 500 ml per minute 500 ml per minute 500 ml per minute Starting volume = 0 L Starting volume = 0 L Starting volume = 0 L Starting volume = 0 L

H 250 ml/min 250 ml/min 250 ml/min 250 ml/min Starting volume = 3 L 40 35 30 25 20 Volume (L) 15 10 5 5 10 15 20 25 30 35 40 Time (Minutes) 250 ml/min 250 ml/min 250 ml/min 250 ml/min Starting volume = 3 L Starting volume = 3 L Starting volume = 3 L Starting volume = 3 L 250 ml/min 250 ml/min 250 ml/min 250 ml/min Starting volume = 3 L Starting volume = 3 L Starting volume = 3 L Starting volume = 3 L

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