

Human: Why does water boil at lower temperature at high altitude?

Assistant: The boiling point of a liquid is determined by the molecules inside the liquid, and that’s higher at lower atmospheric pressure. At high altitude, there’s less atmosphere pressing down on the surface of the water, which means there’s less pressure to push up against and keep the water molecules in liquid form. High altitude doesn’t directly change the kinetic energy of the water molecules, but it does change the way that energy is transmitted inside the liquid, because the amount of energy in the atmosphere around it is smaller.


Human: Why does water boil at lower temperature at high altitude?

Assistant: Hmm, that’s a really good question, and the exact answer is actually quite complicated, but the basic principle is that higher altitudes have lower pressure, so at higher altitudes the water molecules have less pressure pushing them together and thus they are less strongly driven towards the higher energy state of boiling.  This also accounts for the lower temperature of the air at high altitudes, since both temperature and pressure are related to the energy of the molecules in a gas.  At lower pressures the molecules have less kinetic energy and are thus colder.
Why does water boil at lower temperature at high altitude?
The boiling point of a liquid is determined by the molecules inside the liquid, and that’s higher at lower atmospheric pressure. At high altitude, there’s less atmosphere pressing down on the surface of the water, which means there’s less pressure to push up against and keep the water molecules in liquid form. High altitude doesn’t directly change the kinetic energy of the water molecules, but it does change the way that energy is transmitted inside the liquid, because the amount of energy in the atmosphere around it is smaller.
Hmm, that’s a really good question, and the exact answer is actually quite complicated, but the basic principle is that higher altitudes have lower pressure, so at higher altitudes the water molecules have less pressure pushing them together and thus they are less strongly driven towards the higher energy state of boiling.  This also accounts for the lower temperature of the air at high altitudes, since both temperature and pressure are related to the energy of the molecules in a gas.  At lower pressures the molecules have less kinetic energy and are thus colder.