topic 7 vocab Flashcards
a large body of air in the troposphere with similar characteristics of air pressure, moisture and temperature
air mass
The difference in air pressure over a specific distance
Air Pressure Gradient
A weather instrument that measures wind speed
Anemometer
A low air pressure system which brings stormy weather
Cyclone
The temperature at which the air is filled with water vapor and condensation will begin
Dew Point
an interface or boundary between two air masses of different characteristics
Front
Lines connecting points of equal barometric pressure on a weather map
Isobar
Liquid or water which falls from clouds to the surface of the Earth
Precipitation
A weather instrument used to measure relative humidity
Psychrometer
The ratio of the amount of water vapor in the air to the maximum amount that could be held at a certain temperature
Relative Humidity
A description of the atmospheric variables at a particular place during a certain period of time
weather
The properties of the atmosphere that change over time
atmospheric variable
a quantity of matter or the form of matter that holds or clings together in one body ;
mass
