The boiling point of water at sea level is
At higher altitudes, the boiling point of water will be
A) higher, because the altitude is greater.
B) the same, because water always boils at
C) lower, because the atmospheric pressure is lower.
D) higher, because there are fewer water molecules in the air.
E) lower, because temperatures are lower.

Question

The boiling point of water at sea level is 
At higher altitudes, the boiling point of water will be
A) higher, because the altitude is greater. 
B) the same, because water always boils at 
C) lower, because the atmospheric pressure is lower. 
D) higher, because there are fewer water molecules in the air. 
E) lower, because temperatures are lower.

Quizplus · Accepted Answer

The boiling point of water is directly related to atmospheric pressure. At higher altitudes, the atmospheric pressure is lower, which means that the boiling point of water will also be lower.

The Boiling Point of Water at Sea Level Is