28.2 Flashcards
Jet stream
A narrow band of fast moving,high altitude air
Coriolis effect
The apparent deflection of an object due to Earth’s rotation
Air mass
A large volume of air w/ uniform moisture and temp. throughout
Weather font
Air masses interact in zones
how many jet streams are there in the world
4
how many pressure systems are there
2
what is the low pressure system also known as
a low (L)
what direction does the low pressure system flow
counterclockwise
what are some results the a low pressure system
air rises, clouds form and create precipitation
what is a high pressure system known as
a high (H)
what direction does a high pressure system flow
clockwise
what are some results the high pressure system
air sinks and creates clear skies
what are the 4 weather fronts
cold front
warm front
stationary front
occluded front
what causes a cold front
cold air forces warm air up in a fast chaotic manner which create cumulus clouds
what is a cold front represented by in the news
by blue triangles
how are warm fonts created
what causes warm fonts
warm air rises gently above cold air
what is a warm font represented with on the news
red half circles
how are stationary fonts created
cold and warm air masses meet and neither font advances
what are stationary fonts represented by on the news
alternated red half circles and blue triangles
how are occluded fonts created
fast moving cold front overtakes a slow warm front
what are occluded represented by on the news
alternating purple triangles and purple half circles
