Chapter 10 NAS

In equal volumes, which one of the following air masses exerts the highest surface air pressure?

In summer, at the same pressure, maritime tropical air is ______ continental tropical air.

A source region for continental tropical air is

Cold and humid air:

At the same pressure, which one of the following air masses is least dense?

At the same pressure, which one of the following air masses is most dense in winter?

A(n) ____________ air mass has greatest temperature change between winter and summer.

Usually air mass modification is most rapid when

In winter, maritime polar air is ______ continental polar air.

A front is a narrow zone of transition between air masses that contrast in

As a warm front approaches, clouds appear in which one of the following sequences?

A cirrus cloud indicates ______ air advection aloft.

The cloud and precipitation shield associated with a cold front typically is ______ the cloud and precipitation shield associated with a warm front.

A type of cloud associated with a fast-moving, well-defined cold front:

Warm fronts typically travel ______ cold fronts.

The type of front formed when the leading edge of cold air merges with a warm front is known as

An occluded front forms

The most common type of occlusion in the Great Lakes region is the

Surface air pressure drops when horizontal divergence aloft ______ horizontal convergence at the surface.

In a mature extra-tropical cyclone, fog and drizzle are most likely to develop

If a weather station reports a wind shift from northeast to north and then northwest and a steady rain turning to snow flurries, the low center is most likely moving

Precipitation tends to be steady and persistent in the ______ sector of a mature extra-tropical cyclone.

The northwest sector of a mature extra-tropical cyclone is usually the __________.

The warmest sector of a mature extra-tropical cyclone is usually __________ of the cyclone center.

The specific track taken by an extra-tropical cyclone depends on

What is the surface wind direction in the northwest sector of a mature extra-tropical cyclone?

Major winter storms that most directly affect central Indiana follow the ______ cyclone track.

Extra-tropical cyclones that occur with the greatest frequency over North America:

Viewed from above, the surface wind circulation about an Alberta-type cyclone is

If the surface wind backs from northeast to north, Boston usually experiences

If the surface wind veers from east to southeast to south, Baltimore usually experiences

A surface wind that backs with time indicates that you are situated on the ______ side of the track of an extra-tropical cyclone.

______ air advection takes place to the west of a ridge and to the east of a trough.

In the track of an extra-tropical cyclone, the area to the right of the system's forward motion is

Contrasting air masses are brought together to form fronts by the surface winds about centers of ______ pressure.

In the southwestern United States, heat (thermal) lows generally

An intense extra-tropical cyclone tracks up the Mississippi River Valley and passes well to the west of Chicago. As the cold front sweeps through Chicago, the wind shifts from the south to the

A Siberian high is an example of a ______ anticyclone.

At the center of a polar high, the horizontal pressure gradient is ______ and winds are light or calm.

Nocturnal radiational cooling is most intense

When land and water are exposed to the same intensity of solar radiation, the water warms ______ the land.

At night, radiational cooling chills a land surface ______ an adjacent water surface.

A sea breeze dies down near

A land breeze is generally ______ than a sea breeze.

The time of year when a lake breeze is most likely to develop along the Lake Michigan shoreline is

A mountain breeze blows

Chinook winds

As a chinook wind is drawn down the leeward slopes of a mountain range,

The katabatic wind flows

A dust devil