Air Masses
An air mass entering Alaska from the northern Pacific Ocean would most likely be labeled on a weather map as...
What is mP (maritime Polar)
What type of front extends southwest of Oklahoma City? [Map 1]
What is occluded?
Identify the weather instrument used to measure the air pressure associated with hurricanes.
What is a barometer?
What type of isolines are shown on the map? [Map 1]
What is isotherms?
What do isobars represent?
What is pressure?
Which air mass is normally associated with the formation of hurricanes?
What is maritime tropical?
The passage of a cold front most recently influenced the weather of which two cities? [Map 1]
What is Kansas City and Minneapolis?
State one way in which a hurricane differs from a tornado.
— size
— duration
— location of formation
Which two cities most likely have an air temperature closest to 75 ̊F? [Map 1]
What is Cincinnati and Kansas City?
State the compass direction that the center of this storm will move over the next few days if it follows a normal storm track.
What is northeast?
Which atmospheric conditions describe the air mass that is influencing weather conditions at location C? [Map 3]
What is warm and moist?
Draw the accurate fronts, based on the air masses shown. [Map 2]
[I will judge]
What is the usual surface wind pattern around the eye of Northern Hemisphere hurricanes?
What is counterclockwise and inward?
If this weather system is following a normal storm track, the center of this low is most likely moving toward which city? [Map 2]
What is Plattsburg?
Other than low pressure, state two weather conditions associated with a low-pressure center.
— high relative humidity
—greater cloud cover
— increased precipitation
In Connecticut, dry, cool air masses(cP) often interact with moist, warm air masses(mT). Which statement correctly matches each air mass with its usual geographic source region?
1) cP is from the North Atlantic Ocean and mT is from the deserts of the southwestern United States.
2) cP is from northern Canada and mT is from the deserts of the southwestern United States.
3) cP is from northern Canada and mT is from the Gulf of Mexico.
4) cP is from the North Atlantic Ocean and mT is from the Gulf of Mexico.
What is 3?
Color the regions that are most likely experiencing the precipitation associated with this weather system. [Map 2]
[I will judge]
When the eye of a hurricane reaches 30 ̊N latitude, this hurricane will most likely be pushed by planetary winds. What is the name of these planetary winds?
What is southwest winds?
What is the relative humidity in Albany? [Map 4]
What is 100%?
Describe one piece of evidence shown on the map that suggests location A has a lower relative humidity than location B. [Map 5]
— Location A is influenced by a cold, dry air mass.
— Location A has clear skies.
— Location B is in a warm, moist air mass.
— Location B has cloud cover.
Draw a map that shows normal paths followed by low-pressure storm centers as they pass across the United States.
[I will judge your drawing]
State one process that causes clouds to form in the moist air along the cold front.
— condensation
— expanding air
— cooling to the dewpoint
— rising air
— deposition
An Earth Science class is preparing a booklet on emergency preparedness. State one safety measure that should be taken to minimize the danger from a hurricane.
—evacuate to higher elevations
—stay indoors
—do not drive through flood water
What is the wind speed and direction in Albany? [Map 4]
What is 25 knots and northwest?
Explain why location C most likely has a cooler temperature than location D. [Map 5]
— Location C is cooler because it is farther north.
— C is in a continental polar air mass, which is cold, dry air.
— Location C has clouds that block some of the sunlight.