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Why are short-term weather forecasts more detailed than long-term forecasts?
Weather conditions are constantly changing
Which type of air mass brings bitterly cold, dry air and can cause temperatures to drop to -40∘C in winter?
Arctic air mass
Cold air sinks and creates _________ pressure
Warm air rises and creates __________ pressure
high
low
What happens to air pressure as altitude increases?
it decreases
what would happen to the moisture content of a polar maritime air mass as it moves over land?
it would become less humid
Which air masses are cold and humid and bring cloudy/rainy weather?
maritime polar
What happens to the moisture content of a continental polar air mass as it moves over an ocean?
it becomes more humid
what happens during a warm front?
warm air rises above the colder, denser air
wide blanket of clouds form
the atmospheric conditions and short-term changes of a certain place at a certain time
weather
Which type of front forms when a cold air mass overtakes a warm front and forces the warm air upward?
occluded front
What weather conditions are typically associated with a high-pressure system?
clear skies and fair weather
What are some things meteorologists use to describe atmospheric conditions?
pressure
wind direction and speed
precipitation
fronts
___________________ is the amount of water vapor present compared to the maximum amount air could contain at that temperature
relative humidity
What causes wind?
when air moves from areas of high pressure to areas of low pressure
which type of air masses are hot and dry and bring clear skies and high temperatures?
continental tropical
What happens when a cold front forms?
Cold air pushes underneath warm air, forcing it to rise
A weather ________________ is The boundary between two air masses
front
What happens during a stationary front?
the boundary between 2 air masses stalls
__________________ are Large bodies of air with distinct temperature and moisture characteristics
air masses
Weather can only be predicted _______________
(based on chance rather than absolute certainty)
probabilistically