an air mass
A stationary front is created when a warm air mass rises slowly above a cold air mass, creating a steady slope. This can lead to prolonged periods of cloudy and rainy weather as the two air masses interact.
The mass of air in a room depends on how big the room is, the air pressure at the given moment, how pure the air (is it next to a coal-burning power plant?), what planet the room is on, etc.
an air mass that formed over land. it is cold and dry
An Warm air mass
A continental air mass covers a big area.
an air mass
The mass airflow sensor would be between the engine air filter and the big engine air intake tube
On a 1998 Ford Explorer : The Mass Air Flow Sensor is between the engine air filter and the big engine air intake tube
On a 1997 Lincoln Town Car : The Mass Air Flow Sensor is between the engine air filter and the big engine air intake tube
On a 2002 Ford Explorer : The Mass Air Flow sensor is between the top of the engine air filter housing and the big engine air intake tube
On a 2003 Ford Mustang GT : The Mass Air Flow sensor is between the engine air filter and the big engine air intake tube
On a 2001 Mercury Cougar : The Mass Air Flow Sensor is between the engine air filter and the big engine air intake tube
The Goodyear blimp. It has less mass than a bag of air the same size.
On a 1997 Lincoln Town Car : The Mass Air Flow Sensor is between the engine air filter and the big engine air intake tube
On a 1992 Mercury Grand Marquis : The Mass Air Flow sensor should be between the engine air filter and the big engine air intake tube
On a 1998 Ford Explorer : The mass air flow sensor is between the engine air filter and the big rubber engine air intake tube