In a meteorological map, the semi-circle represents a ________ .

When a cold front meets a warm air mass, there will likely be ______________ .

Air masses are formed when the air is stationary over a very large region of land or sea for some time.

If an air mass is stationary over a dry region (like a continent) for some time, the air mass itself will be __________ .

If the air mass is stationary over a wet region (like an ocean) for some time, then the air mass will be ____________ .

If the air mass comes from the Artic region (a very cold place), then the air mass will be _________ .

If the air mass comes from the Equatorial region (a warm place), then the air mass will be ______________ .

Generally, the higher latitude we are from the equator, the ________ it would be.

Generally, the closer we are to the Equator, the _________ it would be.

An air mass that originates from the Polar region (high latitude) and from over the ocean, will be _____________ .

An air mass that originates from the Tropical region and from over the land continent of Africa, would be __________ .