weather Flashcards
(38 cards)
is the atmospheric conditions, along with short term changes, of a certain place and certain time.
weather
scientists who study weather
meteorologists
the force that a column of air applies on the air or a surface below.
air pressure
an instrument used to measure air pressure.
barometer
the amount of water vapor in the air.
humidity
determines the maximum amount of water vapor air can contain
temperature
the amount of water vapor present in the air compared to the maximum amount of water vapor the air could contain at that same temp.
relative humidity
the temperature at which air is saturated, and condensation an occur.
dew point
gaseous form of water.
water vapor
water droplets suspended in the atmosphere.
cloud formation
a cloud that forms near earth’s surface.
fog
is water, in liquid or solid form, that falls from the atmosphere.
precipitation
Rain reaches earths surface.
snow melts then refreezes.
sleet forms as ice melts when falling and then hitting the atmosphere.
hail forms as ice crystals.
the 4 types of precipitation and how they form.
is the series of natural processes by which water continually moves along oceans, land, and the atmosphere.
water cycle
is a large body of circulating air with high pressure at the center, and lower pressure outside.
high pressure system
is a large body of circulating air with pressure at the center and higher pressure outside.
low pressure system
are large bodies of air that have uniform temp.
air masses
arctic
continental polar
maritime polar
continental tropical
maritime tropical
the 5 types of air masses
the man who discovered weather fronts.
Jacob Bjerknes
is a boundary between 2 air masses.
front
forms when less dense, warmer air moves toward colder, dense air.
a warm front
when a colder air mass moves toward a warmer air mass.
a cold front
weather that causes injuries, damage, and death.
severe weather
the cumulus, mature ,dissipation stage
the 3 stages of the thunderstorm life cycle
