Airmasses

#10. The warm sector is indicated by letter:

• AA
• BC
• CB
• DD

#1. What will be the effect on the reading of an altimeter of an aircraft parked on the ground shortly before an active cold front passes?

• AIt will be increasing.
• BIt will remain unchanged.
• CIt will be decreasing.
• DIt will fluctuate up and down by about +/- 50 feet.

#2. In which approximate direction does the centre of a frontal depression move?

• AIn the direction of the warm sector isobars.
• BIn the direction of the isobars ahead of the warm front.
• CIn the direction of the sharpest pressure increase.
• DIn the direction of the isobars behind the cold front.