..Movies about what happens when you        
            heat and cool water!
Heating water forces water vapor out                                   Boiling hot water: bubbles start at bottom   
Reducing pressure over hot water                       Reducing pressure over cold water
           Water boils below 100 C                               Cold water boils!
   Effect of hot air cooling                                        Boiling water in can and inverting it
 Lower pressure doesn't cause much suction
                                     Boiling water then cooling the water vapor