How does altitude effect boiling points?

As altitude increases, the boiling point of a liquid decreases. This is because the atmospheric pressure decreases with increasing altitude, and the lower the atmospheric pressure, the lower the boiling point of a liquid.

For example, at sea level, water boils at 100 degrees Celsius (212 degrees Fahrenheit). However, at the top of Mount Everest, the highest mountain in the world, water boils at only 86 degrees Celsius (187 degrees Fahrenheit) because the atmospheric pressure is much lower at that altitude.

This phenomenon is important for mountaineers and hikers who need to boil water for drinking, cooking, and other purposes. At high altitudes, it is important to boil water for a longer period of time in order to ensure that it is safe to drink.