Air Masses
Fronts
Severe Weather
Weather Instruments
Forecasting
100
Air masses that form over large landmasses are called this.
What is continental?
100
When a cold air mass overtakes a warm air mass.
What is a cold front?
100
This is a heavy storm that is accompanied by rain, thunder, lightning and strong winds.
What is a thunderstorm?
100
This weather instrument measures atmospheric pressure.
What is a barometer?
100
Clusters of meteorological symbols show weather conditions at the locations of weather stations are called this.
What is station models?
200
Air masses that have predominantly cold temperatures are called this.
What is polar?
200
This occurs when two air masses meet, and air move parallel to the front and neither air mass is displaced.
What is a stationary front?
200
Lightning causes this because when electricity is released, the air heats and expands rapidly.
What is thunder?
200
This instrument measures wind speed.
What is an anemometer?
200
These bars on a weather map connect points of equal atmospheric pressure.
What are isobars?
300
An air mass that forms over the water in warm areas is called this.
What is maritime tropical?
300
These fronts occur when a fast-moving cold front overtakes a warm front and lifts the warm air off the ground completely.
What is an occluded front?
300
A destructive, rotating column of air that has very high wind speeds and that is visible as a funnel-shaped cloud is called this.
What is a tornado?
300
Measuring the upper atmosphere can be done with this helium-filled weather balloon that flies high in the atmosphere.
What is a radiosonde?
300
This means a type of severe weather has been spotted and will arrive within 24 hours.
What is a severe weather warning?
400
Air masses bring weather of its ____________.
What is source?
400
These are areas of low-pressure centers, moving toward the rising air of the center in the mid-latitude areas of the United States.
What are mid-latitude cyclones?
400
Tornadoes move in these kind of paths when they touch down.
What is haphazard or wandering?
400
This stands for radio detection and ranging system.
What is radar?
400
This process has been tried to control precipitation, hurricanes and even lightning, but have not been very successful.
What is cloud seeding?
500
These air masses generally move eastward toward Europe.
What is maritime polar?
500
These are areas of high pressure that circulate clockwise and are associated with good weather.
What is an anticyclone?
500
Hurricanes are categorized on this scale.
What is the Saffir-Simpson (1-5) scale?
500
Wind direction coming from the south could be described in _________ degrees.
What is 180 degrees?
500
The most accurate weather forecasts can be made between ________ days.
What is 0-5?