From S103 Science, Block 6, page 63.
Figure 7.8 When the volumes of Table 7.1 are plotted against absolute temperature, the result is a straight line which, if extended downwards, goes through the origin. This is a sign that the volumes are proportional to the absolute temperatures. Note that the downward extension suggests that if the contraction observed between 200°C and 0°C continues, the gas volume will become zero at 0K ( 273°C). We comment on this result in Section 7.5.
This line graph shows how volume of gas rises in response to rise in temperature.
The horizontal axis is labelled "Temperature/K" and is marked from 0 to 600 at intervals of 100K.
The vertical axis is labelled "volume/cm3" and is marked from 0 to 2 at intervals of 1cm3.
There is no grid on the graph, the scale is too small for accurate readings but the three points marked can be deduced from the text and Table 7.1.
The line is straight, it starts at the origin, is a dotted line to the point temperature = 273K, volume 1cm3, then is a solid line passing through the point temperature = 373K, volume 1.37cm3, rising to the point temperature = 473K, volume 1.73cm3.
