Sixth grade EE.6 Explore air masses D2S
An air mass is a large area of Earth's lower atmosphere. An air mass contains air with similar
temperatures and similar humidity levels, or amounts of moisture.
Which of the following descriptions best fits the definition of an air mass?
A) an area above the Pacific Ocean that contains humid air with temperatures
between 3°C and 23°C
B)an area above central Australia that contains dry air with temperatures
around 30°C
C) an area above western China that contains dry air and humid air at roughly
the same temperature
