What causes weather?
A mass of rising warm air that usually bring wet, stormy weather....
What is a low pressure?
Sustained winds of 74 mph or higher
Forms over warm ocean water
What is a hurricane?
What type of weather does a low pressure system bring?
What is stormy?
Between warm air and cold air, I am the one that is lighter.
What is warm air?
Winds 35 mph or higher
Less than 1/4 mile visibility
Heavy snow fall
What is a blizzard
Air pressure gets greater, or lessens, as you gain in altitude?
What is lessens?
What type of weather does a high pressure system bring?
What is clear Skies?
The boundary between two air masses is called.....
What is a front?
Winds up to 300 mph
Forms from severe thunderstorms
What is a tornado?
Do low pressure systems rotate counterclockwise or clockwise?
What is "counterclockwise"?
The leading edge of a moving mass of warm air, brings rain showers, leaves behind warmer air is called .....
What is a warm front?
Speed: Develops slowly over hours or days
Cause: Prolonged rain, melting snow, or river overflow
What is a Flash flood?
What are the 3 types of clouds?
What are cirrus, cumulus, and stratus?
The instrument used to measure air pressure
What is a barometer?
A mass of sinking cool air that usually bring fair weather.
What is a high pressure?
Temperature: Extreme heat over several days
Duration: Lasts days to weeks
What is a heat wave?
Clouds that often produce heavy precipitation and large storms?
What is cumulonimbus clouds?
What is a low pressure system and high pressure system represented by on a weather map?
What is a large red L and a large blue H