Unit 3 Section 6 : Conversion graphs
A conversion graph can be used to change one quantity to another when the units are changed.
Look at the conversion graph below. The vertical axis shows miles per hour and the horizontal axis
shows kilometres per hour. The line on the graph can be used to convert speeds
from mph to kmph and back again.
Remember that you need to read the graph accurately to get accurate answers. When you answer the
questions in this section, the computer will allow for a small amount of inaccuracy but you should read the graphs
as carefully as you can.
To convert 50 mph into kmph
Start by finding 50 on the mph axis. When you have found it, click on the graph
and follow the red arrow across to the conversion line. Now click on the graph again and follow the
red arrow down to the kmph axis. The value is 80 kmph, so
50 mph = 80 kmph
To convert 100 kmph into mph
This time find 100 on the kmph axis. Click on the graph
and follow the blue arrow up to the conversion line. Now click on the graph again and follow the
blue arrow left to the mph axis. The value is 63 mph, so
100 kmph = 63 mph
Work out the answers to the questions below and fill in the boxes. Click on the
button to find out whether you have answered correctly. If you are right
then will appear and you should move on to the next question. If
appears then your answer is wrong. Click on to clear your original answer and have another go. If you can't work out the right answer then click on
to see the answer.
The graph below can be used to convert between French Francs* and British Pounds.
* French Francs were used in France before the Euro
The graph below can be used for converting between weight in kilograms (kg) and weight in pounds (lb).
The graph below can be used for converting between length in metres (m) and length in feet (ft).
You have now completed Unit 3 Section 6
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Produced by A.J. Reynolds January 2001