Why Don't Fire Hydrants Freeze and Explode?

What type of fire hydrant is typically used in places with mild climates, like the southern United States?

• Dry barrel hydrant

• Wet barrel hydrant

• Underground hydrant

• Portable hydrant

What happens to water when it freezes inside a pipe or hydrant?

• It shrinks.

• It stays the same size.

• It expands.

• It evaporates.

What is the "frost line" in relation to fire hydrants?

• The line where the hydrant is painted.

• The depth underground where temperatures stay above freezing.

• The height of the hydrant above ground.

• The maximum water pressure a hydrant can withstand.

Why are dry barrel hydrants preferred in cold climates?

• They are easier to repair.

• They prevent water from freezing and damaging the hydrant.

• They are less expensive to install.

• They can hold more water than other types.