The review questions are provided as an aid in studying. They are similar to the questions that will appear on quizzes during the semester.
How high above sea level is the 250 mb surface?
Answer
Air pressure doubles over a height of 5.5 km. Since 250 mb is one fourth the standard sea level pressure of about 1000 mb, it doubles twice. Thus, the height of the 250 mb surface is about 11 km.