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Meterology Final 12
Meterology Final
| Quetions | Answer |
|---|---|
| Fog formed when warm humid air streams over the cold surface of a lake is known as | advection fog |
| The which cloud is most likely to be a warm cloud? | stratus |
| The activation temperature of the most ice-forming nuclei is_____0 C. | well below |
| The relative humidity within a cloud is______100 percent. | about |
| A cloud that develops as a consequence of local convection is | cumulonimbus |
| An example of a cloud that is always cold is | cirrus |
| Drizzle may be produced by_____clouds. | stratus |
| Which of the following cloud types would be most likely to be responsible for heavy rain? | cumulonimbus |
| Which of the folowing is most likely to be composed of ice crystals only? | cirrus |
| A cloud that may be cold at the top and warm at low levels: | cumulonimbus |
| The type of frozen precipitation sometimes produced by a summer thunderstorm is | hail |
| All of the following typically have relatively low bases with the exception of | cirrus |
| A mountain-wave cloud: | altocumulus lenticularis |
| Of the following cloud types, which one is the warmest? | stratus |
| Fog formed when cold dry air streams over the surface of a relatively warm body of water is know as | steam fog |
| The convective condensation level (CCL) closely corresponds in altitude to the base of a _____cloud. | cumulonimbus |
| Which one of the following has the greatest terminal velocity? | hailstone |
| Most precipitation that falls in midlatitudes originates in______clouds. | cold |
| A warm cloud is composed of | water droplets |
| Nearby objects fixed on the ground, such as buildings or smokestacks, reflect radar signals; such radar echoes constitute | ground clutter |
| Air that blows from land to sea typically undergoes horizontal_____near the coastline. | divergence |
| In the northern hemisphere, the Coriolis effect always acts | to the right direction of motion |
| ______is numerically equivalent to a force per unit mass. | acceleration |
| The surface air pressure is lower in an | cyclone |
| Air that blows from sea to land typically undergoes horizontal_______near the coastline. | convergence |
| A weak tornado is included as a _________ system. | microscale |
| In the southern hemisphere, the Coriolis effect always acts | to the left of the direction of motion |
| A hurricane is included as a ________ system. | synoptic-scale |
| The pressure gradient force always acts directly across isobars and towards ______ pressure. | low |
| The surface air pressure is higher in an | anticyclone |
| The Coriolis Effect arises from the fact that | earth rotates |
| At the equator, the Coriolis effect | is zero |
| Horizontal winds are always named for the direction______they blow. | from which |
| From the largest to smallest, the scales of atmospheric circulation are designated | planetary, synoptic, meso, micro |
| _______is the movement of air measured relative to the Earth's surface. | wind |
| When the horizontal air pressure gradient is zero over a broad region, | the atmosphere is calm |
| The Coriolis effect produces its maximum deflection at the | poles |
| In a geostrophic wind, the horizontal pressure gradient is balanced by | the Coriolis effect |
| Viewed from above in the Southern Hemisphere, surface winds about a subtropical high blow | counterclockwise and outward |
| The average summer location of the polar front jet stream is | southern Canada |
| The trade winds of the two hemispheres converge in the | doldrums |
| Viewed from above in the Northern Hemisphere, surface winds about a subtropical high blow | clockwise and outward |
| A blocking circulation pattern during the summer of 1993 was responsible for record _______ in the midwest. | flooding |
| A _______ flow pattern occurs when masses of cold air surge southward and warm air streams northward. | meridional |
| The average winter location of the polar front jet stream is | southern US |
| A synoptic-scale cyclone is most likely to develop on the______side of an upper-air trough. | east |
| A ______ flow pattern is when the north-south exchange of air masses is minimal. | zonal |
| The Bermuda high is | located on average about 30 degrees N latitude over the Atlantic Ocean |
| The Icelandic low | is located on average about 60 degrees N latitude over the North Atlantic |
| On a typical day,_______Rossby long-waves encircle the globe. | 2 to 5 |
| A synoptic-scale cyclone is most likely to develop on the_______side of an upper-air ridge. | west |
| In the Midwest, drought is most likely with a______circulation pattern in the westerlies. | blocking |
| The eastern flank of a subtropical anticyclone is characterized by | dry climates |
| An extreme and persistent El Nino | may be accompanied by weather extremes in various parts of the world |
| The western flank of a subtropical anticyclone is characterized by | relatively unstable air |
| Ahead of a surface warm front the initial wispy clouds are called __________. | cirrus |
| Contrasting air masses are brought together to form fronts by surface winds about centers of______pressure. | low |
| Precipitation tends to be steady and prolonged in the______sector of a wave cyclone. | northeast |
| A type of cloud associated with fast-moving, well-defined cold front: | cumulonimbus |
| The coldest sector of a mature midlatitude cyclone is usually________of the cyclone center. | northwest |
| A source region for maritime tropical air is | tropical and subtropical ocean |
| Warm and humid air: | mT |
| _______ is a Native American word that, according to tradition, means snoweater. | Chinook |
| Usually air mass modification is most rapid when | continental polar air moves over bare ground |
| Cold fronts typically travel______warm fronts. | faster than |
| The type of front formed when the leading edge of cold air merges with a warm front is known as | an occluded front |
| In a wave cyclone, fog is most likely to develop | just ahead of the surface warm front |
| Most major winter storms that affect the St. Louis area follow the________cylone track. | Colorado |
| An intense synoptic-scale cyclone tracks up the Mississippi River Valley and passes west of Chicago. As the cold front sweeps through Chicago, the wind shifts from the south to the | southwest |
| When land and water are exposed to the same intensity of solar radiation, the land heats up_______the water. | more than |
| In winter, continental polar air is______maritime polar air. | colder than |
| The warmest sector of a mature midlatitude cyclone is usually________of the cyclone center. | southeast |
| What is the surface wind direction in the northwest sector of a mature midlatitude cyclone? | northwest |
| An example of a cold-core anticyclone is | An Arctic High |
| Voilent weather (hail,tornadoes) is most likely to occur during the_______stage. | mature |
| A feature sometimes present in thunderstorms that may prolong the mature stage is (are) | a tilted updraft |
| In the United States, tornadoes are most often triggered by | cyclones |
| The mature stage of the life cycle of a thunderstorm cell is characterized by | both updrafts and downdrafts |
| The dissipating stage of the life cycle of a thunderstorm cell is characterized by | downdrafts only |
| A thunderstorm cloud: | cumulonimbus |
| A gust front is associated with an | intense thunderstorm |
| In the United States, thunderstorms are most frequent in | central Florida |
| The anvil top of a thundrstorm cloud is likely to be a_______cloud that is composed of________. | cirrus.....ice crystals |
| As a general rule of thumb, the higher the top of the cumulonimbus cloud the_______severe is the thunderstorm cell. | more |
| Microbursts are particularly dangerous for aircraft on takeoff or landing because they trigger | wind shear |
| A tornadic circulation that remains aloft and does not touch the Earth's surface is known as a | funnel cloud |
| A mesoscale convective complex (MCC) | consists of numerous interacting thunderstorm cells |
| Typically, all tornadoes that occur each year in the United States, most are rated as_______on the F-scale. | weak |
| The most intense tornadoes are rated_______on the F-scale. | 5 |
| Over the course of a year which one of the following states will likely experience the most tornadoes? | Kansas |
| In the United States, the months of peak tornado activity are | April, May , June |
| Typical weather within the eye of a hurricane consists of | fair skies and light winds |
| Hurricanes do not form at latitude 30 degrees N because | the surface ocean water is too cold |
| Most hurricane - related fatalities are caused by | coastal and inland flooding |
| It is ________ for tornadoes to accompany hurricanes | usual |
| Tornadoes _________ accompany hurricanes that make landfall on the U. S. coast. | often |
| Usually the most destructive aspect of a hurricane is | storm surge |
| The source of energy that sustains a hurricane circulation is | latent heat |
| Hurricane winds | weaken rapidly as the storm moves over land |
| The first sign that a hurricane may be developing over tropical seas is the appearance of | an organized cluster of cumulonimbus clouds |
| The most hurricane - prone location in the United States is | Key West Florida |
| The highest wind speeds in a hurricane occur | in the eye wall |
| The central pressure is _________ in a hurricane than in a typical midlatitude cyclone. | lower |
| The major source of energy in a hurricane is | release of latent heat of vaporization |
| Sustained surface winds in a hurricane are | are greater than 74 miles per hour |
| Most Northern Hemisphere hurricanes occur | June- November |
| When a hurricane threaghtens low - lying coastal areas, the most prudent strategy for residents is to | evacuate |
| When winds speeds reach 39 mi per hour the system is classified a _________ and assigned a name. | tropical storm |
Created by:
Izzy-Bellz
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