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MillerScience Meteorology (Blue)
What phase change occurs at dew point?
it decreases (inverse relationship)
What happens to the relative humidity as the air temperature increases?
How does most water enter the air?
How can you tell from a station model what the relative humidity is?
look at the temperature and dew point (the further apart, the lower the humidity)
What makes the wet bulb cooler?
evaporation causes cooling
if the dew point and air temperature are getting further apart, what does that mean?
the relative humidity is decreasing (its getting drier)
What does it mean if the air temperature is rising?
high pressure = dry weather (sunny)
Where does a cP air mass form?
c=continental, P= polar, cold land. example Canada
Air masses are identified on the basis of:
temperature and moisture content
Which air mass is associated with warm, dry atmospheric conditions?
c=continental (dry), T=tropical (warm), cT
Why do clouds form at fronts?
cold air forces warm air to rise, expand, cool to its dew point and condense
Which way do the winds in a low pressure move in the Northern Hemisphere?
Counterclockwise and in (toward the center)
Which way do the winds in a high pressure move in the Northern Hemisphere?
Clockwise and out (away from the center)
Which way does weather move across the US?
West to East (SW to NE)
Why does weather move across the US from west to east?
Planetary winds (SW winds ESRT p14) and the Jet Stream
At what latitudes are low pressure, wet belts?
0, 60 N, 60 S
At what latitudes are high pressure, dry belts?
30 N, 30 S, 90 N, 90 S
Why do hurricanes lose energy over land?
they get their energy from warm water (no warm water on land)
What material absorbs best?
dull, dark and rough
What material reflects best?
shiny, light and smooth
How does insolation travel through space?
How does a cloud form?
warm air rises, expands, cools to its dew point, condenses, forming a cloud
What substance has the highest specific heat?
Why does it take water a long time to heat or cool?
it has a high specific heat
What is El Nino?
A change in winds over the Pacific ocean, which cause a change in ocean currents, which affects weather worldwide.
Isobars connect points of equal
air pressure (barometric pressure)
When isobars are close together, winds are
warm, rising air creates
cold, sinking air creates
Increasing water vapor makes air
less dense = lower pressure
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