JX102

Question 1

What properties are used to locate and classify fronts?

Answer 1

Temperature, dew point, pressure, wind

Question 2

What parameters of an air mass are generally uniform when measured across a horizontal plane?

Answer 2

Temperature and moisture

Question 3

How will the winds shift during a cold front passage?

Answer 3

SW to NW

Question 4

Squall lines generally develop where?

Answer 4

50 - 300 miles ahead of the cold front

Question 5

How far ahead of a warm front can the associated cloud system reach?

Answer 5

500 to 700 miles

Question 6

When encountering a stationary front, you can expect a ______° wind shift since surface winds tend to blow parallel on both sides of the front.

Answer 6

180

Question 7

When flying through an occluded front, you can expect weather associated with ______ fronts.

Answer 7

both cold and warm

Question 8

The most severe weather with respect to an occluded front is generally located ______ NM south to ______ NM north of the frontal intersection.

Answer 8

100; 300

Question 9

A(n) ______ front usually has no clouds or precipitation.

Answer 9

inactive

Question 10

The area that encompasses the weather located on either side of a front is called the ______.

Answer 10

frontal zone

Question 11

Every front is located in a _______.

Answer 11

low-pressure trough

Question 12

What kind of frontal system is depicted by the purple symbols in this graphic?

Answer 12

Occluded front

Question 13

Which frontal system has a steeper slope?

Answer 13

A cold front

Question 14

A line of violent thunderstorms that forms ahead of a cold front are known as ______.

Answer 14

squall line

Question 15

How does the wind normally shift with the passage of a warm front?

Answer 15

SE to SW

Question 16

What type of weather is usually associated with a stationary front?

Answer 16

Weather similar to a warm front, but usually less intense

Question 17

What classifies an air mass?

Answer 17

An air mass is a large body of air that has essentially uniform temperature and moisture conditions in a horizontal plane.

Question 18

What type of air will have a greater potential for producing clouds and precipitation (dry/moist)?

Answer 18

Moist air

Question 19

What indicates stability of an air mass?

Answer 19

Temperature!

Warm air masses bring stable conditions, while cold air masses are inherently unstable.

Question 20

Where is the most severe weather located in relation to a front?

Answer 20

Most active weather is focused along and either side of the surface front and the frontal zone

Question 21

How are fronts named?

Answer 21

Fronts are named according to their associated temperature change.
For example, if the temperature is warmer after frontal passage, it is a warm front.

Question 22

Three characteristics of fronts are:

Answer 22

1. Fronts are always located in a trough of low pressure.
2. Cold fronts generally move faster than warm fronts
3. Frontal passage usually is accompanied by a 90° shift in wind direction

Question 23

What is a good indicators of frontal intensity?

Answer 23

The amount and rate of temperature change

Question 24

Stratiform clouds will usually produce what type of precipitation?

Answer 24

Steady precipitation and little or no turbulence

Question 25

Cumuli clouds will usually produce what type of precipitation?

Answer 25

Showery precipitation and turbulence

Question 26

The speed of frontal movement affects the weather associated with it. Faster moving fronts are generally accompanied by a narrow band of more ______ weather

Answer 26

Servere

Question 27

The greater the contrast in the temperature and moisture between the two air masses, the greater….?

Answer 27

the greater the possibility of weather associated with a front, particularly severe weather.q

Question 28

What is associated with an inactive front?

Answer 28

No clouds and precipitation. Inactive fronts are also called dry fronts.