1W071 CDC Book 3
1W071 CDC Practice Test Book 2
- 1.Aside from the Air Force Operational Weather Squadrons (OWS), what agency produces discussions on model output?
- A.
Joint Army Air Force Weather Information Network..
- B.
Air Force Weather Agency..
- C.
National Weather Service.
- D.
Air Weather Service.
- 2.What areas do Storm Prediction Center advisory charts outline?
- A.
Areas of expected crosswinds.
- B.
Areas of expected severe weather.
- C.
Areas of frequent crosswind occurrence.
- D.
Areas of frequent severe weather occurrence.
- 3.What do you physically compare the 00-hour forecast with during the initialization step of the verification, initialization and verification (VIV) process?
- A.
Analysis
- B.
12-hour forecast.
- C.
24-hour forecast.
- D.
Previous 12-hour forecast.
- 4.What action is the final step of the verification, initialization and verification process?
- A.
Verify the 00-hour forecast with your current analysis.
- B.
Verify the 12-hour forecast with real-time data for the same time.
- C.
Verify the previous 12-hour forecast with the current 12-hour forecast.
- D.
Verify the previous 12-hour forecast against the current 00-hour forecast.
- 5.What initial conditions are models used based upon?
- A.
Standard atmospheric conditions.
- B.
Previously forecasted conditions.
- C.
Current weather observations.
- D.
Model of choice conditions.
- 6.What action is the goal of severe weather analysis?
- A.
Identify the preconditions that allow storms to become severe.
- B.
Identify the different types of severe thunderstorms.
- C.
Determine the rear-flank downdraft wind direction.
- D.
Determine the mid-level wind speed and direction.
- 7.How many minutes do single-cell storms typically last?
- A.
20 to 30.
- B.
20 to 40.
- C.
30 to 45.
- D.
30 to 60.
- 8.Which characteristic is not one of the single-cell thunderstorm?
- A.
Storm motion equal to the mean wind in the lowest 5km to 7km.
- B.
Weak vertical and horizontal wind shear.
- C.
High winds and hail.
- D.
Frequent tornadoes.
- 9.Where do multi-cell storms typically regenerate?
- A.
Along the gust front.
- B.
The rear-flank downdraft.
- C.
East of the westernmost cell.
- D.
North of the 700mb wind maximum.
- 10.Which characteristic is not one of multi-cell thunderstorms?
- A.
Weak directional shear in the lower levels.
- B.
Straight-line or unidirectional profile.
- C.
Large hail near downdraft centers.
- D.
Short-duration tornadoes.
- 11.Which thunderstorm is not a type of supercell thunderstorm?
- A.
Classic.
- B.
High precipitation.
- C.
Low precipitation.
- D.
Moderate precipitation.
- 12.What size hail do classic supercell thunderstorms typically produce?
- A.
Marble.
- B.
Softball.
- C.
Golf ball.
- D.
Baseball.
- 13.Which type of supercell thunderstorm is most commonly found along the dry line of west Texas?
- A.
Moderate-precipitation.
- B.
High-precipitation.
- C.
Low-precipitation.
- D.
Classic.
- 14.Which region is not a primary source for airmasses?
- A.
Arctic.
- B.
Tropical.
- C.
Equatorial.
- D.
Temperate.
- 15.What letter or symbol is appended to the label of a modifying airmass that is cooler than the ground below?
- A.
Plus symbol.
- B.
Lower case c.
- C.
Lower case k.
- D.
Minus symbol.
- 16.Where is the geographic area known as the "Great Plains" located?
- A.
West of the Rocky Mountains.
- B.
East of the Appalachian Mountains.
- C.
Between the Mississippi River and the Rocky Mountains.
- D.
Between the Appalachian Mountains and the Missouri River.
- 17.In what tornado-producing airmass do tornadoes most frequently occur in families, with paths that are commonly long and wide?
- A.
Type II, Gulf Coast type.
- B.
Type I, Great Plains type.
- C.
Type III, Pacific Coast type.
- D.
Type IV, Inverted “V” type.
- 18.What factor is evident above the inversion with a Type I airmass?
- A.
Moisture increase.
- B.
Rapid drying.
- C.
Condensation.
- D.
Turbulence.
- 19.Which type of airmass is tropical in origin and generally warm and moist?
- A.
Type I Great Plains.
- B.
Type II Gulf Coast.
- C.
Type III Pacific Coast.
- D.
Type IV Inverted V.
- 20.Which type of airmass has cold air at all levels?
- A.
Type I Great Plains.
- B.
Type II Gulf Coast.
- C.
Type III Pacific Coast.
- D.
Type IV Inverted V.
- 21.Which air mass is cold with surface temperatures ranging from 50°F to 68°F, the relative humidity commonly exceeding 70 percent at all levels up to at least 500mb, and average windspeeds of 15 knots at 850mb and 50 knots at 500mb?
- A.
Type II Gulf Coast.
- B.
Type I Great Plains.
- C.
Type III Pacific Coast.
- D.
Type IV Inverted V.
- 22.Which type of airmass features maritime polar air overrunning continental tropical air between 5,000 and 8,000 feet above the surface?
- A.
Type II Gulf Coast.
- B.
Type I Great Plains.
- C.
Type IV Inverted V.
- D.
Type III Pacific Coast.
- 23.What kind of dew-point temperature difference should exist across a dry line?
- A.
< 10o F degrees.
- B.
> 10oF degrees.
- C.
< 10oC degrees.
- D.
> 10oC degrees.
- 24.What severe weather synoptic pattern’s airmass is typically Type III?
- A.
Type C, overrunning.
- B.
Type D, cold core.
- C.
Type A, dry line.
- D.
Type B, frontal.
- 25.When does the maximum severe activity occur with a major cyclone?
- A.
A few hours after sunrise to maximum heating.
- B.
From time of maximum heating to a few hours after sunset.
- C.
Just before and after maximum heating.
- D.
Only during maximum heating.
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