Quiz 12 WX 201
Suppose the wind speed increased from 5 mph to 10 mph. We can conclude that the force exerted by the wind increased by a factor of - 5. - 0.5. - 4. - 2. - 25.
4.
A wind reported as 45°would be a wind blowing from the: - S. - NE. - SW. - E. - NW.
NE.
What is a serious hazard to aircraft? - clear-air turbulence - molecular viscosity - longwaves in the westerlies - laminar flow - thermal lows
clear-air turbulence
On the eastern side of the Rocky Mountains, chinook winds are driest when - surface friction is greatest on the downwind side of the mountain. - the winds are blowing from the east. - clouds form and precipitation falls on the upwind side of the mountains. - the Sun is shining. - the air aloft is cold.
clouds form and precipitation falls on the upwind side of the mountains.
The heat from a chinook wind is generated mainly by - sunlight. - friction with the ground. - forest fires. - compressional heating. - warm, ocean water.
compressional heating.
Clouds and precipitation are frequently found on the downwind side of a large lake. This would indicate that the air on the downwind side is - converging and sinking. - diverging and rising - stable and rising. - converging and rising. - diverging and sinking.
converging and rising.
Thermal turbulence above the surface is usually most severe - immediately after sunset. - during maximum surface heating. - just before sunrise. - about midmorning, or soon after the minimum temperature is reached. - around midnight.
during maximum surface heating.
The wind's speed generally increases with height above Earth's surface because - air temperature normally decreases with height. - friction with Earth's surface slows the air near the ground. - air parcels expand and become less dense as they rise above the surface. - only the lowest layer of air rotates with Earth. - wind instruments are not accurate at Earth's surface.
friction with Earth's surface slows the air near the ground.
The most practical location for building a wind turbine would be - in a region of strong, gusty winds. - in a region of moderate, steady winds. - in a narrow valley. - on the downwind side of a mountain. - anywhere on top of a mountain.
in a region of moderate, steady winds.
During the summer along the coast, a sea breeze is usually strongest and best developed - around midnight. - just before noon. - in the afternoon. - just before sunset. - just after sunrise.
in the afternoon.
Surface winds are generally strongest and most gusty - just after sunset. - in the early morning. - around midnight. - in the afternoon. - just before sunrise.
in the afternoon.
A pilot enters the weather service office and wants to know what time of the day she can expect to encounter the least turbulent winds at 760 m (2500 ft) above central Kansas. If you were the weather forecaster, what would you tell her? - at midnight - in the afternoon - in the early morning - at sunset - at noon
in the early morning
Wind blowing with sufficient force to rip the roof off buildings - only happens during snowstorms. - is impossible. - happens during every storm. - is common. - is uncommon.
is uncommon.
During the summer in humid climates, nighttime clouds tend to form over water during a - lake breeze. - land breeze. - chinook wind. - sea breeze. - Santa Ana wind.
land breeze.
The nighttime counterpart of the sea breeze circulation is called - land breeze. - Santa Ana. - foehn. - a night breeze. - Chinook.
land breeze.
Which of the below determines how high a wind wave will grow over the open ocean? - water quality - geographical location - density of water - shoreline topography - length of time the wind blows over the water
length of time the wind blows over the water
The slowing of the wind due to the random motion of air molecules is called - mechanical turbulence. - eddy viscosity. - convective turbulence. - kinetic viscosity. - molecular viscosity.
molecular viscosity.
If you are standing directly south of a smoke stack and the wind from the stack is blowing over your head, what would be the wind direction? - west - east - north - south - northeast
north
An upper wind direction is reported as 315°. From what compass direction is the wind blowing? - northwest - northeast - east - south - north
northwest
An upper wind direction is reported as 315°. From what compass direction is the wind blowing? - east - northeast - north - south - northwest
northwest
A sea breeze circulation will reverse direction and become a land breeze - several times per day. - once per day. - once a month. - at the beginning and the end of the summer. - once every few days.
once per day.
Eddies that form both close to the mountain and beneath each wave crest are called - mountain wave eddy. - wind shear. - rotors. - leeward eddy. - clear air turbulence.
rotors.
When a sea breeze moving east meets a sea breeze moving west, they form a - sea breeze convergence zone. - valley breeze. - thermal low. - katabatic wind. - land breeze.
sea breeze convergence zone.
On a clear, windy day, the depth to which mixing occurs above the surface depends upon - cloud coverage. - wind direction. - precipitation type. - surface heating. - nuclei types in the atmosphere.
surface heating.
A sea or land breeze is caused by - strong surf conditions. - temperature differences. - the Coriolis force. - differences in humidity. - ocean tides.
temperature differences.
The size and shape of a turbulent eddy depends upon - the size and shape of the obstacle. - the wind direction. - topography of the surrounding landscape. - elevation where the obstacle is located. - the composition of the obstacle.
the size and shape of the obstacle.
If huge waves pound against the beach communities of Southern California for several days during clear, calm weather, it is a good bet that - the winds are strong somewhere out over the Pacific Ocean. - there is a large difference in water density between the shoreline of Southern California and the middle of the Pacific. - it is a period of high tides. - it is raining offshore. - an earthquake has occurred somewhere on the ocean floor.
the winds are strong somewhere out over the Pacific Ocean.
The land/sea breeze, lake breeze, and mountain/valley breeze are examples of - thermal turbulences. - frictional processes. - atmospheric longwave circulations. - mechanical circulations. - thermal circulations.
thermal circulations.
Wind gusts are caused by - circulations on the synoptic scale. - turbulent eddies. - wind shear. - wind waves. - mesoscale circulations.
turbulent eddies.
While fly fishing in a mountain stream, you notice that the wind is blowing upstream. From this, you could deduce that the wind is a - Santa Ana wind. - katabatic wind. - mountain breeze. - chinook wind. - valley breeze.
valley breeze.
While fly fishing in a mountain stream, you notice that the wind is blowing upstream. From this, you could deduce that the wind is a - valley breeze. - mountain breeze. - Santa Ana wind. - katabatic wind. - chinook wind.
valley breeze.
Chinook winds are - warm, moist downslope winds. - warm, dry upslope winds. - cold, moist downslope winds. - warm, dry downslope winds. - cold, dry downslope winds.
warm, dry downslope winds.
The synoptic scale describes circulations on the ____ scale. - global - meso - macro - micro - weather-map
weather-map
What is an example of mesoscale motion? - winds blowing through a city - average wind patterns around the world - winds on a 500 mb chart - winds on a surface weather map of North America - winds blowing past a chimney
winds blowing through a city
An offshore wind blows - from land to water. - from water to land. - only at night. - a minimum distance of 100 miles away from the shore. - only during the day.
from land to water.
A wind rose indicates - the percentage of time that the wind blows from different directions. - spinning wind patterns caused by buildings or other obstructions. - the wind speed at a location at a particular time. - a rose fossilized by wind. - observed wind speed and direction on a surface map.
the percentage of time that the wind blows from different directions.