Atmospheric Pressure
the closer the isobars the ______ the wind
stronger
the UK is located in which prevailing wind band
westerlies
closely spaced ______ indicates a step pressure gradient of high winds
What is isobars
What does the L stand for on a weather map
Cyclone
What is it called when cold air goes up the sides of a mountain
Valley Breeze
What is the weight of the air at sea level
What is 14.7 pounds per square inch
1 kg per square cm
the coriolis effect influences wind _________
direction
the stormy zone separating air masses of polar origin from masses of subtropical origin
Polar Front
decreased chance of hurricanes
What measures wind direction
wind vane
high pressure means ________ weather
fair
The unequal heating of earth's surface generates pressure _____________
differences
a wind blowing down the leeward side of a mountain and warming by compression
Chinook
When a cyclone is spinning the pressure does what as it enters the center
Decreases
what is the best instrument for measuring wind speed
cup anemometer
1020 millibars is considered ________ pressure
high
wind travels out of ____ pressure
high
seasonal reversal of wind directions associated with large continents
Monsoon
why is the Santa Ana dangerous, and for whom?
Why is atmospheric pressure such an important indicator of current and changing weather conditions?
Because air pressure impact and trends are very consistent: rising pressure means dryer, fairer weather, lower/falling air pressure means cloudy and wetter weather.
what is the force that generates wind
pressure gradient force
swift, high altitude winds
jet stream
In the northern hemisphere an anticyclone spins
outward and clockwise
a land breeze usually originates during the _________ and flows toward the __________
evening/night; sea