Question

the passage describing a tornado prediction mentioned two air masses. read the passage again and then answer the question below.
a meteorologist uses atmospheric maps to examine air masses, which are large areas of air in earths lower atmosphere. the meteorologist notices that an air mass with dry air is approaching an air mass with warm, moist air. in the same region, there are strong winds higher in the atmosphere. the meteorologist recognizes that this combination of air masses and winds in the region could lead to a tornado event.
the word mass can be used in different ways. which definition better fits the use of mass in the passage?
a large body of matter
the total amount of matter that an object contains

Explanation:

The passage defines air masses as "large areas of air in Earth's lower atmosphere". The first option "a large body of matter" aligns with this description as air masses are large volumes (bodies) of air (matter). The second option refers to the total amount of matter in an object, which doesn't fit the context of air masses as large regions of air.

Answer:

a large body of matter