41.
Hygroscopoic nuclei may be formed from
A
particles of dust
B
nitric acid particles
C
smoke from forest fires
D
all of the above
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Hygroscopoic nuclei may be formed from
particles of dust
nitric acid particles
smoke from forest fires
all of the above
Hurricanes generally are:
larger than tornadoes
smaller than midlatitude cyclones
areas of heavy rainfall and strong winds
all of these
Hurricanes and midlatitude cyclones are similar in that:
both are areas of low pressure
both have conspicuous surface fronts
both are most common and well-developed in the winter season
both form in the trade-wind belt
Heat lightning:
is brighter than ordinary lightning
is also called ball lightning
occurs more than 20 kilometers from the person observing it
is actually a display of the northern lights
Freezing rain (ice storm) or sleet occurs when
upper air is cold and surface air is warm
both surface and upper air are cold
both surface and upper air are warm
upper air is warm and surface air is cold
During which of the time spans listed below should hurricane formation in the North Atlantic be at a peak?
January-February
April-May
August-September
November-December
Downdrafts totally dominate the.......................in the development of a thunderstorm.
cumulus stage
mature stage
dissipating stage
Downdrafts and updrafts found side by side relate to the.......................in the development of a thunderstorm.
cumulus stage
mature stage
dissipating stage
Deserts such as the Great Basin, Gobi, and Takla Makan are examples of:
chinook deserts
subtropical deserts
rain shadow deserts
monsoon deserts
Compared to other types of fronts, the weather associated with a cold front usually
covers more area
is less violent but of longer duration
involves less precipitation
is more violent but of shorter duration
Clouds are classified and named according to their altitude and
water content
temperature
size of droplets in the cloud
form or appearance
Clouds and precipitation form in the air primarily due to
moisture being added to the air
air being cooled as it rises
excessive numbers of hygroscopoic nuclei
release of latent heat
Cloud seeding with silver iodide is based on the
Bergeron process
collision-coalescence process
both a and b
none of these
Characteristics of an air mass source region include
sharp temperature contrasts
high elevation
uniformity of temperature and moisture
jet stream winds aloft
Anvil head is a term applied to:
cumulonimbus clouds
any high cloud
nimbostratus clouds
all clouds that form on the windward side of mountains
Another common term for the wave cyclone is:
tropical cyclone
anticyclone
polar-front cyclone
none of these
An mP air mass is:
dry and cold
humid and cold
dry and warm
humid and warm
An air mass is often modified as it moves over the earths surface. This modification is largely due to
jet streams above
clouds
strong pressure gradients
contact with the ground below
An air mass is a body of air with
equal density throughout
similar values of temperature and moisture in the horizontal
very high pressure everywhere
at least two frontal zones
An air mass from the Gulf of Mexico is called:
cP
mP
cT
mT