Category 1
When severe weather condition already exist, the National Weather Service issues a
warning
The most powerful severe storm is the
hurricane.
a line that connects points of equal temperature is a
isotherm
Violent storms usually form along a ______________ front.
cold.
True or False...High pressure means good weather because the air's sinking motion makes it difficult for air to rise and form clouds.
The interaction of air, water and ____________________ results in weather
A violent, whirling wind that moves in a narrow path over land is a...
tornado
To keep track of high and low pressure areas, weather maps are drawn with lines connecting points of equal atmospheric pressure. These lines are called
isobars
An __________ ______________ is a large body of air that has the same properites as Earth's surface over which it develops.
air mass
The boundary between cold and warm air masses is called a
front.
True or False
Areas of low pressure usually have precipitation and storms, hotter temperatures, and cloudy weather.
False:
Areas of low pressure usually have precipitation and storms, cold temperatures, and cloud weather.
Raindrops that pass through a layer of freezing air near the ground become _______
sleet
A ___________________ studies and forecasts the weather using data gathered from many sources.
An air mass that forms off the southeast coast of the U.S. is
warm/moist
Which type of precipitation that forms when the air temperature is below freezing and water vapor changes directly to a solid is _______________
snow