chapter 20 test Flashcards
how do you describe air mass
the amount of humidity and temp.
why is the Continental tropical arrow smalled than the other ones
because it does not move much
name all air masses and characteristics.
maritime tropical-humid and warm
continental polar- dry and cold
maritime polar- humid and cold
continental tropical-dry and warm
what air mass brings most of the rain to eastern central usa
maritime tropical
where does maritime polar come from
Siberia. then it gains humidity when it passes the water .
what is a noreaster
its basically a very big lake effect
what is an Indian summer
it is when the cT becomes extra strong and extends up to us.
what is a front
the boundary between two air masses
when a warm air mass goes over a cold one what clouds form from highest to lowest
cirrostratus, altostratus and nimbostratus
how fast does a cold front move compared to a warm front
2x as fast
when cold front happens and they collide what type of clouds form
cumulonimbus
how long are storms on warm and cold fronts
the storms on warm fronts are long and the storms on cold fronts are short
what is a stationary front
when they collide and push w
what is a occluded front describe the rain tooo
it is when two cold front are moving the same direction but but into each otehr and push up warm air.
at first there is heavy rain but then it is more light later.
what happens during a mid latitude cyclones
its just a cyclone that goes through mid usa.
describe the low and high cylone
the low cyclone goes counterclockwise and in and up out. then the air goes out and clockwise so they are together.
what are the stages of thunderstorm
cumulus, mature stage, and dissipating stage.
why does florid have so much storms
because of the air form maritime tropical and the gulf of mexico and the hot air rises.
what is lightning
the light resulting from the electrons. positive are on the ground
why is tornado alley in the plains
because of the warm humid ari coming from the south and the cold air coming from the north that mix in the area of tornado alley.
what is a fulrgurite
sand struck by lightning. and it cooled so quickly that there was no time to form crystals.
how to survive oustide during a storm
cover your head and get low
where do tornadoes usually spawn
in a long line of thunderstorms. Squall line.
what is the grayness in a tornado the cause of
water cooling to dew point and debris.
what is a mesoclone. what is the tip of a thunderstorm called
the air starts to bounce around and go upright. the anvil
what is a storm surge
its a dome of water that sweeps over the coast when the hurricanes eye comes over the land
how does a hurricane develope
they are fueled by the energy given off when huge amounts of water vapor condense
what is that one forecasting rhyme
read at nigh sailors take delight, red in the morning sailors take warning.
