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73 terms

Science Midterm

STUDY
PLAY
how much of sun's en energy is reflected back to space?
30%
90 degree angle solar rays are striking the tropic of cancer on?
april 21
a place located along a windward coast will probably have?
cooler summer temperatures than an inland location at the same latitude
the annual range of temp is?
difference between the average temperature of the warmest and coldest months
transfer of heat through matter by molecular activity is by
conduction
ozone is concentrated in the ?
stratosphere
the length of daylight gets progressively longer going south from the equator on ?
sept 21
the fall equinox in southern hemisphere occurs on?
march 21
the storage of heat in the lower layer of the atmosphere produced by certain heat absorbing gases is called the ?
greenhouse effect
practically all clouds and storms occur in this layer of the atmosphere?
troposphere
daily mean is found by?
found by getting mean of max & min. temp
the longest wavelengths on the electromagnetic spectrum are?
radio
fifty percent of the gases making up the atmosphere are found below?
3.5 miles (5.6 km)
ozone filters out most of the ______ radiation in sunlight?
ultraviolet
the normal lapse rate in troposphere is about
6.5 degrees per km
air is best described as
a mixture
the spring equinox in the northern hemisphere occurs on ?
march 21
the amount of water vapor in the air (by volume) usually does not exceed?
4%
under what circumstances could relative humidity exceed 100% without producing condensation in the air?
when the air is perfectly dry
the change of state from a gas to a liquid is?
condensation
the dew point is the temperature at which?
water vapor condenses to a liquid
which fog may be categorized as an evaporation fog?
steam
the cloud form that is best described as sheets or layers that cover much or all of the sky is
stratus
this fog results from adiabatic cooling
advection
this term is used to describe clouds that produce precipitation
nimbo
the process of converting a liquid to vapor is
evaporation
when water vapor changes directly to a solid it is called?
deposition
a wintertime form of precipitation that consists of small ice particles is called?
sleet
this fog forms in valleys at night
advection fog
this cloud may develop an "anvil head"?
cumulonimbus
when warm moist air moves over a cold surface ____ fog may result
advection
the most important process of cloud formation in the atmosphere is ________
cooling by expansion of air
when a solid converts directly to a gas without a liquid state, it is?
sublimination
a halo around the sun or moon means what is present?
cirrostratus
which cloud consists of globular cloud masses that takee on a billowy or cauliflower like structure?
cumulus
stability prevails when the environmental lapse rate is
less than the wet adiabatic rate
when supercooled raindrops freeze on contact with solid objects what forms?
glaze
deserts such as the great basin, gobi, and takla makan are examples of
rainshadow desets
high air pressure systems are usually associated with
clear weather
a steep pressure gradient ______
produces strong winds
lines on a weather map connecting places of equal air pressure are called?
isobars
in the southern hemisphere, the winds associated with a low pressure system blow
clockwise and toward the center
instruments for measuring air pressure?
barograph, mercurial barometer, and aneroid barometer, NOT used : anemometer
in the n. hemisphere, the winds associated with a low pressure system (cyclone) blow
counterclockwise and toward the center
most of the us is situated in which zone of prevailing winds?
westerlies
which factors influence the magnitude of the coriolis force?
both wind speed and latitude
the force that generates wind is
pressure gradient forceq
this pressure zone is associated with abundant precipitation and warm temperatures
equatorial low
another name for the area of equatorial lows is the
doldrums
what is the technical name for a high pressure center
anticyclone
upper air winds
are unaffected by the Coriolis & are generally faster than surface winds
if earth were not rotating
air would move directly from high to low pressure
the mercurial barometere was invented by
galileo
a santa ana ( or chinook or foehn) wind is a
very dry, warm wind flowing down a mountain slope
an altimeter is an adaption of the
anemometer
the sahara and australian deserts are associated with
subtropical high
the coriolis influences
only wind direction
when an area is experiencing several consecutive days of rather constant weather it is __________
occluded front weather
an mp air mass is
cold and humid
tornadoes most often move towards what direction?
northeast
which should have the steepest pressure gradient?
tornado
cirrus clouds followed by cirrostratus and then altostratus means the approach of a?
warm front
what's shown by a line with semicircles extending from one side
cold fronts
what air mass is the source of most moisture for precipitation in the central and eastern u.s.?
mT
an air mass from the gulf of mexico is labeled
mT
hurricanes generally are?
areas of heavy rainfall and strong winds, smaller than mid-latitude cyclones & larger than tornadoes
what is true about tornadoes?
true: most common in midwest and great plains, usually occur along the warm front of a mid-latitude cyclone, associated with cumulonimbus, NOT TRUE: occur most in spring
why are hurricanes less intense on land?
lack of warm, moist air
this air mass originates as a different air mass in siberia and is subsequently altered
cP
"rain long foretold long lasat, short notice soon pass" first part ?
refers to a warm front
when an active cold front overtakes a wrm front
an occluded front forms
the ______ west coast climate is situated on the western (windward) side of continents from 40-65 degrees ?
subtropical
almost ____ of australia is desert
50%