what causes air to rise

Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator. This is called anticyclonic flow. Air from higher in the atmosphere sinks down to fill the space left as air is blown outward.

Which condition below would make a layer of air more unstable?

When a layer of air is forced to rise it tends to become more unstable because the top layer cools more rapidly than the bottom. This steepens the environmental lapse rate. This effect is enhanced even more when the lower layer of the lifted parcel is moist and the upper layer is dry.

What are the 4 atmospheric lifting mechanisms?

– There are four lifting mechanisms that form clouds: Orographic Lifting, Convection, Convergence, and Updraft.

What do we really mean when we say warm air rises?

When we heat air, the molecules jiggle and zip around faster, which causes them to spread out. When a mass of air takes up more space, it has a lower density. … Warm air rises when it’s surrounded by cold air because of its lower density.

What does stable air mean?

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.

Which of the following would be characteristic of unstable air?

What are characteristics of unstable air? Turbulence and good surface visibility.

What conditions might you encounter when flying into unstable air?

Smooth air, but poor visibility due to haze, fog, or stratus clouds. What types of clouds, precipitation, and visibility are usually associated with unstable air? B. Cumuliform clouds, rain showers, and good visibility outside of shower areas.

Can elevated storms produce tornadoes?

Elevated storms tend to reside in the cold sector of a storm system. Surface-based storms are usually the type of storms that can produce tornadoes. Elevated storms are more associated with large hail and strong, damaging winds.