The mercurial barometer was invented by
Torricelli
The force exerted by the air above is called
Air pressure
What are centers of low pressure called
Cyclones
Variations in air pressure from place to place are the principal called
Lows
In winter, large landmasses often develop a seasonal
High pressure system
A sea breeze is most intense
during mid to late afternoon
What is the pressure zone that is associated with rising air near the equator
Equatorial low
What are high altitude, high velocity winds called
Jet streams
Where is deflection of wind due to coriolis effect the strongest
Near the poles
In what stormy region do the westerlies and polar easterlies converge
Polar Front
Describe how an aneroid barometer works
An aneroid barometer works by using a vacuum sealed chamber to negate a needle or pointer. This is done by detecting the natural high or low pressure in the air surrounding the vacuum sealed chamber which moves the pointer by contracting and detracting.
Write a general statement relating to the spacing of isobars to wind speed
The spacing of isobars is inversely proportional to the wind speed
Describe how weather that usually accompanies a A. barometric drop in weather and B. A rise in barometric pressure
A. bad weather
B. good weather
How does the corioilis effect modify air movement in the Southern hemisphere
Wind is deflected to the left
The trade winds originate from which pressure zone
Subtropical high-pressure zones but then converge near the Equator at the Inter-tropical convergence zonee.
Air pressure
The force exerted by the weight of a column of air above a given point
Barometer
an instrument that measures atmospheric pressure
Pressure Gradient
the amount of pressure change occurring over a given distance
Coriolis Effect
the apparent deflective force of the earths rotation all free moving objects, including the atmosphere and oceans; Deflection is to the right in the Northern Hemisphere and to the left in the Southern Hemisphere
Jet Stream
Swift high altitude winds
Cyclone
a low pressure center characterized bu a counterclockwise flow of air in the Northern hemisphere
Anti Cyclone
a high pressure center characterized by a clockwise flow of air in the northern hemisphere
Trade Winds
two belts of wind that blow almost constantly from easterly directions and are located on the north and south sides of the subtropical winds
Westerlies
the dominant west to east motion of the atmosphere that characterizes the regions on the poleward side of the subtropical highs
Polar Easterlies
in the global pattern of prevailing winds, winds that blow from the polar high towards the subpolar low these winds, however, should not be thought of as persistent winds
Polar Front
the stormy frontal zone separating cold air masses of polar origin from warm air masses of topical origin
Monsoon
the seasonal reversal of wind direction associated with larger continents, especially Asia
Prevailing Wind
Global winds that blow constantly from the same direction
Anemometer
An instrument used to measure wind speed
El Nino
(oceanography) a warm ocean current that flows along the equator from the date line and south off the coast of Ecuador at Christmas time
La Nina
A cooling of the ocean surface off the western coast of South America, occurring periodically every 4 to 12 years and affecting Pacific and other weather patterns.