What are characteristics of a moist, unstable air mass? Cumuliform clouds and showery precipitation . If an unstable air mass is forced upward, what type clouds can be expected? Clouds with considerable vertical development and associated turbulence.
What are characteristics of an unstable air mass?
Air is considered unstable, in the lowest layers of an air mass when the air is warmer and or more humid than the surrounding air. When this occurs the air will rise, as that air parcel is warmer than the air surrounding it. In an unstable environment, the weather can change suddenly and can be violent .
What is moist unstable air mass?
To be “unstable”, the lowest layers of an air mass must be so warm and/or humid that, if some of the air rises, then that air parcel is warmer than its environment , and so it continues to rise. This is called moist convection.
What are characteristics of unstable air quizlet?
What are characteristics of unstable air? Turbulence and good surface visibility . Explanation: It is easy to associate turbulence with unstable air.
What are four characteristics of stable air?
| Unstable Air Stable Air | Cumuliform clouds Stratiform clouds and fog | Showery precipitation Continuous precipitation | Rough air (turbulence) Smooth air | Good visibility, except in blowing obstructions Fair to poor visibility in haze and smoke |
|---|
What are characteristics of stable air?
What are the characteristics of stable air? A— Good visibility; steady precipitation ; stratus clouds. B—Poor visibility; steady precipitation; stratus clouds. C—Poor visibility; intermittent precipitation; cumulus clouds.
What causes unstable air mass?
Air is considered unstable, in the lowest layers of an air mass when the air is warmer and or more humid than the surrounding air . ... Condensation releases heat, which warms the air parcel and can cause the parcel to rise even higher.
What would decrease the stability of an air mass group of answer choices?
The stability of an air mass decreases when its lower layers become warm and sometimes humid , making the mass warmer than its environment and causing...
Which would increase the stability of an air mass?
Indicates stability: stability of the atmosphere is determined by vertical movements of air. Warm air rises when the air above is cooler. Cooling from below : surrounding air is warmer, which would increase the stability of an air mass.
What is the difference between stable and unstable air?
Stable air means that the weather is likely to be calm . It may rain or snow slowly and steadily, it may be sunny, but the weather will not change quickly. Unstable air means that the weather might change quickly with very little warning. Unstable air leads to sudden thunderstorms.
What would decrease the stability of an air mass quizlet?
Clouds with considerable vertical development and associated turbulence. What would decrease the stability of an air mass? Warming from below .
Is the amount of moisture in the air?
The amount of water vapor in the air is called absolute humidity . The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity. This amount of space in air that can hold water changes depending on the temperature and pressure.
What will happen if a stable air mass is forced aloft quizlet?
What will happen if a stable air mass is forced aloft? It will sink back toward Earth’s surface . Under what condition is air said to be conditionally unstable? The environmental lapse rate is between the dry adiabatic rate and the saturated adiabatic rate.
What are the effects of stable air?
Stable atmospheres can be associated with drizzle, fog, increased air pollution , a lack of turbulence, and undular bore formation.
What is an indicator of stable air?
Indicators of a stable atmosphere are steady winds, clouds in layers, and poor visibility due to haze and smoke hanging near the ground . Unstable conditions are indicated by dust devils, gusty winds, clouds with vertical growth, and good visibility. (
How do you know if air is unstable?
If it falls rapidly with height , then the atmosphere is said to be unstable; if it falls more slowly (or even temporarily increases with height) then a stable atmosphere is present.
