In extremely cold climates, why don't fire hydrants freeze solid in winter?

More Questions. Additional questions in this category.

• 

  Which metal expands as it gets colder?
  by Ombliss22 on January 8th, 2011 | 2 people like this

• 

  do air molecules speed up or do they expand and push some out of the room when they are introduced to the heat source of light?
  by Brandy_F on February 3rd, 2011 | 1 person likes this

• 

  Have you ever asked a question on here but felt the need to retract it because you feel it may cause an undesirable result?
  by mikedsign on May 28th, 2011 | 1 person likes this

• 

  HOW WE CAN CALCULATE THE VELOCITY OF FLUID IF IT ACCLERATE FROM ZERO VELOCITY AND WE HAVE GIVEN ENERGY
  by Satish_T on August 14th, 2011 | 1 person likes this

• 

  If cold water of about 5 degrees celcius is run around a sealed can filled with air at about 40 degrees celcius , what will happen?
  by Inddiggo:)) on June 23rd, 2011 | 1 person likes this

• More Thermodynamics See only professionally researched Thermodynamics questions