# What do the sections between the lines on the phase diagram below represent?

Aug 10, 2017

The way I interpret this graph is the range of factors/conditions that influence states of matter of water to change.

The lines simply represent the border between each state.

For example, for water to be in a solid state, the temperature can vary from ~10^oC to ${0.01}^{o} C$, as long as the (air) pressure is somewhere between $0$ $\text{atm}$ to $\approx 2$.

The independent variable corresponds to the dependent variable.

Hope this helps :)