Term
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Definition
| the short term condition of the atmosphere. |
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Term
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Definition
| the long-term average of weather conditions and extremes in a region. |
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Term
TRUE/FALSE?
An air mass initially reflects the characteristics of its source region. |
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Definition
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Term
TRUE/FALSE?
An air mass is heterogeneous in terms of temperate and humidity. |
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Definition
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Term
TRUE/FALSE?
Air masses tend to maintain their original characteristics as they migrate from their source regions. |
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Definition
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Term
TRUE/FALSE?
Moist air is denser than dry air. |
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Definition
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Term
| Air masses that develop over Canada are examples of ___ air masses. |
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Definition
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Term
| A well-developed, newly formed cP air mass would have... (3) |
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Definition
| Cold temperatures, high pressure, and clear skies. |
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Term
| The maritime tropical Pacific and maritime tropical Gulf and Atlantic air masses are... |
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Definition
| different from one another because the Pacific air mass usually has lower specific humidity than the Gulf/Atlantic air mass. |
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Term
| An mT air mass is likely to be _____ than a cT air mass because the mT air mass... |
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Definition
| wetter; forms over the ocean. |
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Term
| Name 3 situations that would result in the modification of the air mass. |
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Definition
1) An mT air mass moving across Texas
2) A cP air mass moving across the Great Lakes
3) A cT air mass moving across the Gulf of Mexico |
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Term
TRUE/FALSE?
Lake effect snow involves heavy snowfall on the leeward shores of the Great Lakes. |
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Definition
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Term
| The four atmospheric lifting mechanisms are... |
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Definition
| convergent, convectional, orographic, and frontal. |
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Term
| Summer afternoon thundershowers in the southeastern U.S. are more than likely a result of... |
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Definition
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Term
| The term "orographic" refers to... |
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Definition
| forced uplift due to the presence of a physical barrier. |
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Term
TRUE/FALSE?
Heavy rain and snow fall on the eastern sir of Cascades is due to orographic lifting. |
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Definition
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Term
| The term "rain shadow" refers to... |
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Definition
| dry regions on the leeward side of mountain ranges. |
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Term
TRUE/FALSE?
Chinook winds are cold and dry winds. |
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Definition
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Term
TRUE/FALSE?
Chinook winds form on the leeward side of mountains. |
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Definition
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Term
| The two types of fronts are... |
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Definition
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Term
| After a cold front passes, the temperature ________ and the pressure ______. (relative to the conditions that existed prior to the passage of the front.) |
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Definition
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Term
TRUE/FALSE?
The energy source of thunderstorm is from the condensation of large amounts of water vapor in the clouds. |
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Definition
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Term
| Florida has the highest thunderstorm frequency in the U.S. because... |
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Definition
1) the Florida peninsula heats to high temperature during the day
2) mT air masses surround the peninsula |
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Term
TRUE/FALSE?
Tornadoes occur in every month except March and April in the U.S. |
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Definition
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Term
TRUE/FALSE?
The peak month of tornado occurrence is November. |
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Definition
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Term
| The highest frequency of tornadoes in the U.S. occurs in... |
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Definition
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Term
| Tropical cyclones are called ______ in North America, ______ in China, and ______ in Australia. |
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Definition
| hurricanes; typhoons; cyclones |
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Term
TRUE/FALSE?
Tropical cyclones originate entirely within tropical air masses. |
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Definition
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Term
| The sea surface temperature (SST) must be greater than _____ for triggering a tropical cyclone. |
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Definition
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Term
TRUE/FALSE?
Tropical cyclones in the Northern Hemisphere rotate clock wisely. |
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Definition
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Term
| Which part of a hurricane consists of dry, descending air? |
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Definition
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Term
TRUE/FALSE?
On weather maps, a warm front is represented by a line with small triangle spikes that point in the direction of frontal movement. |
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Definition
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