Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Which of these statements are correct regarding air masses?

1. An air mass is cold when its temperature is lower than the underlying surface.
2. An air mass may extend for thousands of km.

• A. 1 only
• B. 2 only
• C. Both 1 and 2
• D. Neither 1 nor 2

Answer 1

The correct option is C Both 1 and 2

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> A cold air mass is colder than the underlying surface and is associated with instability and atmospheric turbulence.
Air mass may extend from surface to lower stratosphere and are across thousands of kilometres.