CBM CBM Synoptic Meteorology and Weather Systems 1 — Questions and Answers
Question 1: What type of front forms when a cold front overtakes a warm front?
- Stationary front
- Occluded front (Correct answer)
- Dryline
- Thermal front
Correct answer: Occluded front
An occluded front forms when a faster-moving cold front catches up to and lifts a warm front, creating a complex boundary zone.
Question 2: What is the standard sea-level pressure in millibars used as a reference in meteorology?
- 1000.0 mb
- 1013.25 mb (Correct answer)
- 1020.0 mb
- 1008.5 mb
Correct answer: 1013.25 mb
Standard sea-level pressure is 1013.25 mb (29.92 inches of mercury), used as the baseline reference for atmospheric pressure analysis.
Question 3: Which air mass type originates over tropical ocean regions and brings warm, moist conditions to the US?
- cP (continental Polar)
- mT (maritime Tropical) (Correct answer)
- cT (continental Tropical)
- mP (maritime Polar)
Correct answer: mT (maritime Tropical)
Maritime Tropical (mT) air masses form over warm tropical oceans and are the primary source of heat and moisture for Gulf Coast and Southeast US weather.
Question 4: In the Northern Hemisphere, surface winds around a low-pressure system rotate in which direction?
- Clockwise and outward
- Counterclockwise and inward (Correct answer)
- Clockwise and inward
- Counterclockwise and outward
Correct answer: Counterclockwise and inward
Coriolis deflection causes Northern Hemisphere low-pressure winds to flow counterclockwise and converge inward toward the center.
Question 5: What is the meteorological term for the narrow zone separating two air masses of contrasting temperature and moisture?
- Trough
- Front (Correct answer)
- Dryline
- Convergence zone
Correct answer: Front
A front is the boundary between two air masses with different densities, and it is where significant weather changes most often occur.
Question 6: A ridge on a 500 mb upper-air chart typically signals what type of surface weather?
- Active storminess and precipitation
- Fair, dry, and warm conditions (Correct answer)
- Frontal passages and wind shifts
- Heavy snowfall and blizzard conditions
Correct answer: Fair, dry, and warm conditions
Upper-level ridges indicate descending air (subsidence), which suppresses cloud development and promotes fair, dry weather at the surface.
CBM CBM Synoptic Meteorology and Weather Systems 1
What type of front forms when a cold front overtakes a warm front?