Weather Patterns and Severe Storms

In an average_______ tropical cyclone per year is entering the Philippine Area of Responsibility (PAR), with about 8 or 9 of them crossing the Philippines.

is an extremely large body of air whose temperature and humidity properties are relatively similar in any horizontal direction at any given altitude.

A single air mass may cover more than a _____________.

Regions, where air masses originate, are known as

The longer the air remains stagnant over its source region, or the longer the path over which the air moves, the more likely it will acquire properties of the surface below

• true

• false

originate in high latitudes and are composed of cool or cold air

originate in low latitudes and warm.

If its source region is over land, an air mass tends to be dry and is called

If an air mass forms over the ocean, it is more humid and is classified as

The narrow zone or the transition zone between two different air masses (different densities) is called a