Author Question: Humid air is more dense than dry air at the same temperature. Indicate whether the statement is true ... (Read 29 times)

Collmarie · **on:** Aug 22, 2018

Humid air is more dense than dry air at the same temperature. Indicate whether the statement is true or false.

Question 2

Higher than normal sea-surface temperatures in the Gulf of Mexico in 2005 led NOAA meteorologists
to forecast high storm activity in the Atlantic. Indicate whether the statement is true or false.

mathjasmine · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: F
Although it would seem that there humid air would be more dense than dry air, the opposite is true.
The water molecules have less mass than the nitrogen and oxygen molecules in the air. The oxygen
and nitrogen gets displaced by the water molecules which is why the air winds up less dense when
humid Information can be found in the section The Atmosphere Is Composed Mainly of Nitrogen,
Oxygen, and Water Vapor.

Answer to Question 2

ANS: T
The sea-surface temperature was high in 2005. The Gulf Stream's position and the Gulf eddy brought
additional warmth to locations on the trajectory of tropical cyclones. Information can be found in the
section The Atlantic Hurricane Season of 2005 Was the Most Destructive Ever Recorded.