1
What is the name of a high-level cloud
cirrostratus
Two unmoving air masses of different temperatures form what type of front?
stationary
When evaporation and condensation are occurring the same rate, the air is said to be
saturated
hail
What is a cloud that has a low level base and a top composed of ice crystals?
cumulonimbus
What type of front does a frontal cyclone usually begin with?
stationary front
When an area if receiving less precipitation that normal it is experiencing what type of drought?
meteorological
Liquid precipitation that freezes when it hits the ground or another substance is called
freezing rain
What type of precipitation consists of drops of liquid water smaller than raindrops?
drizzle
What is the ratio of the amount of water in the air to the amount of water saturated air called?
relative humidity
What mid level clouds are known for covering the sky and producing steady precipitation?
nimbostratus
Lens shaped clouds that often form near mountains are called what type of clouds?
lenticular
This consists of large drops of liquid water
rain
What is the general term for fog that forms when air near the ground cools rapidly on a clear night
radiation fog
What term refers to the temperature at which cooling air begins condensing?
dew point
A lack of precipitation that affects an area's crops is called
agricultural drought
The area of the surface over which an air mass formed is its
source region
Ice crystals usually in geometric shapes
snow
What do meteorologists call an extended period of heave snow and high winds?
blizzard
What is a brownish haze that develops as complex molecules are broken down into ozone and other harmful substances?
photochemical smog
The movement of water from the air to the earth's surface and back is the
hydrologic (water) cycle
Water vapor whose temperature has dropped below the freezing point is said to be
supercooled
Layers of glaze and rime
hail
What is the boundary between two air masses of different temperatures called?
front
A brief intense snow fall is called a
blizzard