Fronts
This is a boundary between two air masses
What is a front?
These air masses originate over water
What are maritime air masses?
This is caused by the weight of the air above an area
What is air pressure?
This measures temperature in Fahrenheit and Celsius
What is a thermometer?
What color are Cold Fronts indicated with on Weather Surface Maps?
What is blue?
These are warm air masses that replace cold air masses
What are warm fronts?
The two characteristics of air masses are humidity and what?
What is temperature?
Air pressure does this with increasing height above Earth
What is decreases?
This helps read the humidity in the air by swinging it around
What is a sling psychrometer?
What kind of front is two Cold masses slamming into each other and kicking the warm air mass out!
Occluded
These are the faster, mostly stronger types of fronts.
What are cold fronts?
These air masses are more dense
What are warm air masses?
This makes sunny clear skies with calm winds that spiral clockwise
What are high pressure systems?
Air pressure is measured with this
What is the barometer?
What do we call the little image with the circle in the middle, a line with "feathers" sticking out of it and a bunch of numbers and symbols all around it?
Weather station model
Showers and thunderstorms form around the leading edges of these fronts
What are cold fronts?
This is a large body of air with relatively similar temperature and humidity
What are air masses?
This makes cloudy and rainy skies with winds that spiral counter-clockwise
What is Low pressure?
This measures wind speed in mph
What is the anemometer?
In which layer of the Atmosphere does weather occur?
The Troposphere
These cause light rain over several days
What are stationary fronts?
These air masses are cold and approach from N,NW, or W
What are polar air masses?
Atmospheric pressure can be measured in which two units?
Inches or Millibars
This carries instruments to high altitudes
What is a weather balloon?
\\_____ = ___ knots
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