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Which type of air mass would most likely form over the Pacific Ocean north of the Aleutian Trench?*
Base your answers to questions 2 on the map below, which shows the position of the jet stream relative to two air masses and a low-pressure center (L) over the United States.
What is the difference in the air temperature and humidity between the cP and mT air masses?*
Base your answers to questions 3 on the cross section below and on your knowledge of Earth science. The arrows on the cross section represent the air movement along a weather front between two different air masses. The air masses are labeled.
Which statement best describes the difference in air temperature and humidity between the cP and mT air masses?*
Which type of air mass most likely has high humidity and high temperature?*
Base your answers to questions 5 on the weather map below. The map shows isobars and seven weather station models. Four of the weather stations are identified by letters A, B, C, and D.
Which weather station had the highest relative humidity?*
When it is solar noon at a location at 75° W longitude, what is the solar time at a location at 120° W longitude?*
Base your answers to questions 7 on the weather map below, which represents a low-pressure system over New York State. The L on the map represents the center of the low-pressure system. Two fronts extend from the center of the low, and are labeled front 1 and front 2. Cloud cover has been omitted from the station models.
Which map best represents the type of fronts and direction of movement of these fronts in relation to the low-pressure center?*
The map of North America below shows the source region of an air mass forming mostly over Mexico.
This air mass originating over Mexico is classified as*
The station model below shows some weather conditions at a location on Earth’s surface.
Which present weather symbol represents the most likely type of precipitation occurring at this location?
*
Which rock will weather at the fastest rate when exposed to acid rain?*
Base your answers to questions 11 on the weather map below and on your knowledge of Earth science. On the weather map, the location of the center of a high-pressure system (H) and a front are shown. Isobar values are labeled in millibars (mb). Weather station models represent the weather conditions at Atlanta, Georgia, and Tampa, Florida.
Describe one piece of evidence shown on the map that indicates that Tampa, Florida, has a high probability of precipitation. [1]*
Base your answers to questions 12 on the weather map below and on your knowledge of Earth science. The map indicates the location of a low-pressure system over New York State during late summer. Isobar values are recorded in millibars. Shading indicates regions receiving precipitation. The air masses are labeled mT and cP. The locations of some New York State cities are shown. Points A and B represent other locations on Earth’s surface.
An air mass acquires the characteristics of the surface over which it forms. In image below, circle the type of Earth surface (land or ocean) and describe the relative temperature of the surface over which the mT air mass most likely formed. [1]
Circle one: land ocean Relative temperature of Earth’s surface:*
Base your answers to questions 13 on the map below, which represents the geographic source regions of two air masses, X and Y. The arrows represent the convergence of these air masses, which may result in tornadoes.
Use the standard two-letter air-mass symbols to identify air-masses X and Y. [1]
Air-mass X:
Air-mass Y:*
Base your answers to questions 14 on the weather map below and on your knowledge of Earth science. The map shows the location of a wintertime low-pressure system over Lake Ontario with two fronts extending into New York State. Isobar values are recorded in millibars. Partial weather station data are shown for several locations.
State the compass direction toward which the center of this low-pressure system moved over the next two days if the low followed a normal storm track. [1]*
Base your answers to questions 15 on the table below, on the map in image provided, and on your knowledge of Earth science. The table lists the latitude, longitude, and barometric pressure, in millibars (mb), of the center of a low-pressure system (L) as it moved across North America from March 14 to March 17. The map in image provided shows the center of this low-pressure system (L) and associated fronts on March 14. The location of the low-pressure system 24 hours later on March 15 is also indicated.
On the station model in the image provided, using the proper format, record the barometric pressure of the low-pressure center (L) on March 16. [1]
