Adiabatics and Stability: DGCA Aviation Meteorology questions

Question 1

If the ELR is 0.65°C / 100 m, the layer is:

Accepted Answer

atmosphere is stable when dry

Answer

atmosphere is conditionally stable

Answer

atmosphere is stable

Answer

atmosphere is unstable

Question 2

ELR is 1°C / 100 m, the layer is:

Accepted Answer

neutral when dry

Answer

absolute stability

Answer

absolute instability

Answer

conditional stability

Question 3

Why does air cool as it rises?

Accepted Answer

It expands

Answer

It contracts

Answer

The air is colder at higher latitudes

Answer

The air is colder at higher altitudes

Question 4

From which of the following can the stability of the atmosphere be determined?

Accepted Answer

ELR

Answer

Surface pressure

Answer

Surface temperature

Answer

DALR

Question 5

When the upper part of a layer of warm air is advected:

Accepted Answer

Stability increases within the layer

Answer

Stability decreases within the layer

Answer

Wind speed will always decrease with increase in height in the Northern Hemisphere

Answer

Wind will back with increase in height in the Northern Hemisphere

12 more questions in this chapter, free with an account