The short-term condition of the atmosphere is:
Climate is the _____-term average of weather conditions and extremes in a region
T or F: An air mass initially reflects the characteristics of its source region
T or F: An air mass is heterogeneous in terms of temperature and humidity.
T or F: Air masses tend to maintain their original characteristics as they migrate from their source regions.
Air masses that develop over Canada are examples of ____ air masses.
T or F: Moist air is denser than dry air.
All of the above (cold temp, high pressure, clear skies)
A well-developed, newly formed cP air mass would have which of the following characteristics?
Different from one another because the Pacific air mass usually has lower specific humidity than the Gulf/Atlantic air mass
The maritime tropical Pacific (mT) and maritime tropical Gulf and Atlantic (mT) air masses are
wetter; forms over the ocean
An mT air mass is likely to be ____ than a cT air mass because the mT air mass _______
All of the Above
Which of the following would result in the modification of the air mass?
T or F: Lake effect snow involves heavy snowfall on the leeward shores of the Great Lakes.
conversion; cold front, convection, orographical,
List four atmospheric lifting mechanisms:
Summer afternoon thundershowers in the southeaster United States are more than likely a result of:
A term that means forced uplift due to the presence of a physical barrier
T or F: Heavy rain and snow fall on the easter sides of Cascades is due to orographic lifting.
A term that refers to dry regions on the leeward side of mountain ranges.
T or F: Chinook winds are cold and dry winds.
T or F: Chinook winds form on the leeward side of mountains.
cold and warm
List two types of fronts.
After a cold front passes, the temperature ______ and the pressure _______.
T or F: The energy source of thunderstorms is from the condensation of large amounts of water vapor in clouds.
A & B only.
Florida has the highest thunderstorm frequency in the U.S., because
T or F: Tornadoes occur in every month except March and April in the United States.
T or F: The peak month of tornado occurrence is November.
The highest frequency of tornadoes in the United States occurs in:
hurricane, typhoon, cyclone
Tropical cyclones are called _______ in North America, _____ in China, and ______ in Australia.
T or F: Tropical cyclones originate within tropical air masses
The sea surface temperature (SST) must be greater than _____ for triggering a tropical cyclone
Tropical cyclones in the Northern Hemisphere rotate clockwise.
Which part of a hurricane consists of dry, descending air?
T or F: On weather maps, a warm front is represented by a line with small triangle spikes that point in the direction of frontal movement.