Adiabatics and Stability-Meteorology-Oxford

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

atmosphere is conditionally stable

atmosphere is stable

atmosphere is unstable

atmosphere is stable when dry

#2. ELR is 1°C / 100 m, the layer is:

neutral when dry

absolute stability

absolute instability

conditional stability

#3. Why does air cool as it rises?

It expands

It contracts

The air is colder at higher latitudes

The air is colder at higher altitudes

#4. From which of the following can the stability of the atmosphere be determined?

Surface pressure

Surface temperature

DALR

ELR

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

Stability increases within the layer

Stability decreases within the layer

Wind speed will always decrease with height in the Northern Hemisphere

Wind will back with increase in height in the Northern Hemisphere

#6. The temperature at the surface is 15°C, the temperature at 1000 m is 13°C. The atmosphere is:

unstable

conditionally unstable

stable

cannot tell

#7. Which of the following gives conditionally unstable conditions?

1°C / 100 m

0.65°C / 100 m

0.49°C / 100 m

None of the above

#8. A mass of unsaturated air is forced to rise till just under the condensation level. It then settles back to its original position. What happens to the temperature?

Temp. is greater than before

Temp. stays the same

Temp. is less than before

It depends on QFE

#9. What happens to the stability of the atmosphere in an inversion? (Temp increasing with height)

Absolutely stable

Unstable

Conditionally stable

Conditionally unstable

#10. What happens to stability of the atmosphere in an isothermal layer? (Temp constant with height)

Absolutely stable

Unstable

Conditionally stable

Conditionally unstable

#11. What is the effect of a strong low-level inversion?

Good visibility

Calm conditions

Turbulence

Unstable conditions

#12. A layer of air can be:

conditional; unstable when unsaturated and stable when saturated

conditional; unstable when saturated and stable when unsaturated

neutrally stable when saturated and unstable when unsaturated

all of the above

#13. What happens to the temperature of a saturated air mass when forced to descend?

It heats up more than dry because of expansion

It heats up less than dry because of evaporation

It heats up more than dry because of sublimation

It heats up less than dry because of latent heat released during condensation

#14. In still air, a lapse rate of 1.2°C / 100 m refers to:

DALR

SALR

ELR

ALR

#15. What happens to the temperature of a saturated air mass when descending?

It heats up more than dry because of expansion

It heats up less than dry because of evaporation

It heats up more than dry because of compression

It heats up less than dry because of latent heat released during condensation

#16. The DALR is:

variable with time

fixed

variable with latitude

variable with temperature

#17. An environment cooling at more than 1°C / 100 m is said to be:

conditionally stable

conditionally unstable

unstable

stable

Adiabatics and Stability-Meteorology-Oxford

Tropical System Quiz For CPL

Air Density- Meteorology- Oxford

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Adiabatics and Stability-Meteorology-Oxford

Results

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

#2. ELR is 1°C / 100 m, the layer is:

#3. Why does air cool as it rises?

#4. From which of the following can the stability of the atmosphere be determined?

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

#6. The temperature at the surface is 15°C, the temperature at 1000 m is 13°C. The atmosphere is:

#7. Which of the following gives conditionally unstable conditions?

#8. A mass of unsaturated air is forced to rise till just under the condensation level. It then settles back to its original position. What happens to the temperature?

#9. What happens to the stability of the atmosphere in an inversion? (Temp increasing with height)

#10. What happens to stability of the atmosphere in an isothermal layer? (Temp constant with height)

#11. What is the effect of a strong low-level inversion?

#12. A layer of air can be:

#13. What happens to the temperature of a saturated air mass when forced to descend?

#14. In still air, a lapse rate of 1.2°C / 100 m refers to:

#15. What happens to the temperature of a saturated air mass when descending?

#16. The DALR is:

#17. An environment cooling at more than 1°C / 100 m is said to be:

Tropical System Quiz For CPL

Air Density- Meteorology- Oxford

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