________ is the name of the process by which water vapor enters the
atmosphere during the water cycle.
Relative humidity can be measured with a(an) _____________.
cooling of the air & the presence of particles in the air
. Two conditions are required for cloud formation are __________ and____________.
Very high feathery clouds are called ________________.
On average, a snowfall of 50 centimeters would equal a rainfall of ________.
Cold, dry air affecting the northern United States in winter often comes from ___ _______ air masses.
dry and clear
Weather associated with an anticyclone is generally ______________.
Small lines at the end of the shaft that represents wind direction on a weather map indicate _______________.
balloons & Satellites
The collecting of weather data in the last 40 years has been improved mostly by ____________.
The most dangerous aspect of a snowstorm is often the __________.
Sudden, violent floods that occur shortly after a storm are called _________________.
high winds & low pressure
A hurricane's storm surge is caused by a combination of _________ and_____.
A long period of scarce rainfall or dry weather called a _____________ may result in a shortage of water.
On newspaper weather maps, colors are often used to indicate ____________________ ranges for different areas.
Storms that form within large cumulonimbus clouds and produce rain and lightning are called ____________________.
At a ______, warm air meets and moves over cold air.
The low air pressure of _______ is often associated with storms and precipitation.
falling air pressure
Rain or snow usually is associated with ____________ .
The boundary where unlike air masses meet but do not easily mix is called a(n) _______.
_________ form in the same kind of cloud as thunderstorms