Question

Fluids, including air, do not readily mix if their densities are different. The boundaries between neighboring air masses of different densities are called ______. Differences in air-mass density are due to differences in temperature and/or humidity.

a) Fronts
b) Isobars
c) Isotherms
d) Isodrosotherms

Answer 1

The boundaries between neighboring air masses of different densities are called fronts.

Step-by-step explanation:

The boundaries between neighboring air masses of different densities are called fronts. Differences in air-mass density are due to differences in temperature and/or humidity. When hot and cold air masses meet, they do not readily mix due to their different densities. The boundary between them is known as a front.