H is for HIGH PRESSURE H is for HEAVY BLUE COOLER Cool air contracts Cool air sinks because COOL air is HEAVIER Sunny but slightly cooler weather Heavy shoves clouds out of the way ID: 654100
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Slide1
High Pressure vs.
Low PressureSlide2
H is for “HIGH PRESSURE”
H is for
HEAVY
BLUE = COOLERCool air contractsCool air sinks because COOL air is HEAVIERSunny but slightly cooler weatherHeavy shoves clouds out of the wayCLEAR SKIESDry airPressure increases which makes it heavierSlide3
L is for “LOW PRESSURE”
L is for
LIGHTER
RED = WARMERLight air/low pressure expandsWarm air rises because warm air is LIGHTEROften brings rainy/snowy weatherHumid, moist airPressure decreases which makes it lighterSlide4
Cold Front
vs.
Warm FrontSlide5
COLD FRONT
Looks like icicles
Has
air that is HEAVYA cold front has COLD(cooler), dry air behind it as it moves forwardWhen a cold front meets a warm front, it shoves the warm front up higherBrings THUNDERSTORMS
Pp. 600Slide6
WARM FRONTLooks like half suns
A warm front has
warmer,
moist air behind it.When it moves over a cold front, it will rain near the frontal line where the rising air condenses. Pp. 600 Slide7
HIGH PRESSURESpins ClockwisePulls air downNo cloud coverCooler, Dry air
Page 602Slide8
LOW PRESSURESpins CounterclockwiseRise UPForms cloudsWarmer, moist air
HUMID
Brings possible:
TornadoesHurricanesPage 602Slide9
COLD FRONT (pg 600)Slide10
WARM FRONT (pg 600)Slide11
Weather ForecastingSample Forecast:
http://www.teachertube.com/viewVideo.php?video_id=164203
Weather Channel:
http://www.weather.com/maps/maptype/currentweatherusnational/uscurrentweather_large.html