The Corilois force is the force that causes the wind to blow.
Hot air with a low relative humidity may actually contain more water vapor than cool air with a high relative humidity.
On a cloudless day, the tropopause is easily visible with the naked eye.
The ground is a better emitter of infrared radiation and cools more quickly than air.
The temperature in a rising parcel of air will always be the same as that of the surrounding air.
Visibility generally improves after a rain storm.
The air pressure at the summit of Mount Everest is higher than the air pressure at sea level.
Clouds, fogs, and precipitation are more likely to form where prevailing winds are upslope than where the winds are downslope.
Dense fog is more prevalent in mountainous areas (especially those regions where rising cold air cools and condenses) than coastal margins.
Frost occurs when dew freezes.
On a windy day, you would expect to record warmer daytime and warmer nighttime temperatures than on a day with calm winds.
The formation of ice releases heat and warms the surroundings.
A cloud with an anvil-shaped top is most often associated with
cumulonimbus
altocumulus
cumulus congestus
cumulus humilis
Which process results in a decrease in relative humidity?
increasing the actual water vapor pressure
cooling the air
warming the air
decreasing the saturation water vapor pressure
The moist adiabatic rate is ___ than the dry adiabatic heat because latent heat is ___ the rising air.
less; removed from
less; added to
greater; removed from
greater; added to
During atmospheric convection, rising air bubbles are called ___.
clouds
vapors
thermals
wind
The ___ force is an apparent force created by Earth's rotation.
pressure gradient
gravitational
centripetal
Corilois
Which cloud type would most lickely form in absolutely stable air?
stratus
On an upper-air chart, normally we find warm air associated with ___ pressure, and cold air associated with ___ pressure.
low; low
low; high
high; high
high; low
In clear weather, the air next to the ground is usually ___ than the air above it at night, and ___ than the air above it during the day.
warmer; warmer
cooler; warmer
colder; colder
warmer; colder
The letter H and L on a surface weather map refer to regions of high and low ___.
latitude
winds
pressure
temperature
Beneath a lenticular cloud downwind of a mountain, a large swirling eddy forms what type of cloud?
nimbus
rotor
lee wave
mountain wave
If you observe large raindrops hitting the ground, you could conclude that the cloud overhead was ___ and had ___ updrafts.
thick; strong
thin; strong
thin; weak
thick; weak
Clouds often form in ___.
sinking air in the center of a high pressure area
rising air in the center of a low pressure area
sinking air in the center of a low pressure area
rising air in the center of a high pressure area
The energy of motion is known as ___.
specific heat
radiant energy
potential energy
kinetic energy
What is responsible for the cold feeling that you experience after leaving a swimming pool on a hot, dry summer day?
heat transport by convection
heat transport by radiation
heat transport by conduction
heat transport by latent heat
As the air temperature increases, the air's capacity for water vapor ___.
decreases
can either increase or decrease because it is unrelated to air temperature
remains constant
increases
On an upper-air chart, the wind aloft tends to blow ___.
at right angles to the isobars or contour lines
at an angle between 10 degrees and 30 degrees to the contours and towards lower pressure
at constant speed
parallel to the isobar or contours
A ridge on an upper-air isobaric chart indicates ___.
a region with calm winds
average heights
lower-than-average heights
higher-than-average heights
Cyclonic flow means ___ in either the Northern or Southern Hemisphere.
clockwise wind flow
circulation around a high pressure center
circulation around a low pressure center
counterclockwise flow
If upper-level divergence exceeds surface convergence, the air pressure at the center of the low will ___, and the isobars will become ___ tightly packed.
decrease; less
increase; less
increase; more
decrease; more
An inversion represents an extremely stable atmosphere because ___.
surface air becomes warmer than air aloft
inversions allow air pollutants to escape freely from surface air
air becomes cooler with height
inversions act as a lid on vertical air motion
Particles that serve as surfaces on which water vapor may condense are called ___.
nacreous nuclei
hydrophobic nuclei
scud
condensation nuclei
A good example of ___ fog is observed along the Pacific Coast during summer, when warm, moist air from the ocean is carried over colder coastal waters.
advection
radiation
evaporation
high
In the lower atmosphere, any air that rises will ___ and cool.
vaporize
expand
compress
evaporate
As the air temperature increases, with no addition of water vapor to the air, the dew point will ___.
increase
remain the same
decrease
become equal to the air temperature
If an air parcel is given a small push upward and it continues to move upward on its own accord, the atmosphere is said to be ___.
dynamic
stable
buoyant
unstable
The movement of smoke in the atmosphere from one area to another by wind is an example of ___.
conduction
reflection
Which environmental lapse rate represents the most unstable condition in a layer of unsaturated air?
3 degrees Celsius per 1000 m
6 degrees Celsius per 1000 m
11 degrees Celsius per 1000 m
9 degrees Celsius per 1000 m
In a temperature inversion, air temperature ___.
increases with decreasing height
decreases with increasing height
increases with increasing height
remains constant with increasing height
Condensation is more likely to occur when air ___.
warms and the speed of the water vapor molecules decreases
cools and the speed of the water vapor molecules decreases
cools and the speed of the water vapor molecules increases
warms and the speed of the water vapor molecules increases
Which chemical process is an example of condensation?
ice formation
cloud droplet formation
photosynthesis
water vapor formation
Nightime radiation inversions occur on most ___ nights.
rainy, calm
rainy, windy
clear, windy
clear, calm
Which type of cloud shows the greatest vertical growth?
cirrocumulus
Which cloud type would be most likely to form ina an unstable atmophere?
nimbostratus
cirrostratus
What set of conditions, working together, will make the atmophere the most unstable?
cooling the surface and cooling the air aloft
warming the surface and cooling the air aloft
cooling the surface and warming the air aloft
warming the surface and warming the air aloft
Which set of conditions, working together, will make the atmosphere the most stable?
Areas of high atmospheric pressure are also known as ___.
hurricanes
anticyclones
tornadoes
troughs
Dew is most likely to form on ___.
clear, calm nights
cloudy, calm nights
clear, windy nights
cloudy, windy nights
In the middle latitudes of the Northern Hemisphere, surface winds tend to blow ___ and ___ around an area of surface low pressure.
counterclockwise; inward
clockwise; inward
clockwise; outward
counterclockwise; outward
On a cold, winter morning, the most likely place for radiation fog to form is ___.
over a body of water
at the top of a hill or mountain
along the side of a hill
in a valley
The surface air around a strengthening low pressure area normally ___, while, above the system the air normally ___.
converges; converges
converges; diverges
diverges; converges
diverges; diverges
Frost forms when ___.
conditions are cold, cloudy, and windy
the dew point is 32 degrees fahernheight or below
the dew point is above 32 degrees fahernheight
dew freezes
Radiation fog forms when ___.
water vapor is added ro air next to the ground
air pressure ar the ground drops suddenly
air next to the ground is cooled
there is a increase in condensation nuclei in air at the ground
Cold and cloudy nights are warmer than cold and clear nights (other factors being equal) because ___.
of thermal belts
clouds reflect sunlight
of strong radiation inversions
clouds absorb outgoing infrared energy and radiate it back to the surface
The wind around a surface low pressure in the Southern Hemisphere blows ___ the center.
clockwise and inward toward
counterlockwise and inward toward
clockwise and outward from
counterclockwise and outward from
All of the weather we are familiar with on Earth occurs in the ___.
troposphere
stratosphere
mesosphere
exosphere
As the difference between the air temperature and the dew point increases, the relative humidity ___.
remains constant and equal to 100%
remains constant at a value less than 100%
The force that causes the wind to blow is the ___ force.
Coriolis
frictional
The wind around a surface high pressure center in the Northern Hemisphere blows ___ the center.
counterclockwise and inward from
clockwise and inward from
A ___ pressure usually indicates clearing weather or fair weather.
constant
steadily falling
steadily rising
fluctuating
Light or moderate continuous precipitation is most often associated with ___ clouds.
What pattern is most likely associated with clear skies and fair weather?
high pressure regions
low pressure regions
warm regions
a cold front
A baseball will travel slightly farther on a ___ day.
hot, dry
cool, cloudy
hot, humid
cool, clear
Which combination produces the strongest Coriolis force?
slow winds and low latitude
fast winds and low latitude
fast winds and high altitude
slow winds and high altitude
The name given to a towering cloud that produces precipitation that is showery with frequent changes in intensity is ___.
The pressure gradient force is directed from higher pressure toward lower pressure ___.
only at the equator
at all places on Earth except for the equator
at all places on Earth
only at the poles
Which condition would contribute to higher surface air temperatures?
moist loamy soil
dry loamy soil with high vegitation
dry sandy soil with little vegetation
moist loamy soil with high vegitation