AB AB Meteorology and Weather Observation 3

Question 1

In the Northern Hemisphere, winds circulate around a high-pressure system in which direction?

Accepted Answer

Clockwise

Answer

In the Northern Hemisphere, winds circulate clockwise around high-pressure (anticyclonic) systems due to the Coriolis effect.

Question 2

What is the most dangerous hazard associated with a landfalling tropical cyclone?

Accepted Answer

Storm surge

Answer

Storm surge—the dome of ocean water pushed ashore by hurricane-force winds—is the deadliest hazard of a landfalling tropical cyclone.

Question 3

What does 100% relative humidity indicate?

Accepted Answer

Air is saturated; fog or precipitation is likely

Answer

At 100% relative humidity, the air is fully saturated, meaning the dew point equals the air temperature and condensation is imminent.

Question 4

Which cloud type is associated with thunderstorms and severe weather?

Accepted Answer

Cumulonimbus

Answer

Cumulonimbus clouds are towering convective clouds associated with thunderstorms, lightning, heavy rain, and sometimes hail.

Question 5

What do 'isobars' represent on a weather chart?

Accepted Answer

Lines connecting points of equal atmospheric pressure

Answer

Isobars are lines drawn on a weather chart connecting points of equal atmospheric pressure, revealing pressure gradients and circulation patterns.

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