Download Notes: Weather

Name:________________________________________________ Date:__________________________ Hour:_________
Notes: Weather
What is weather?
Refers to the ________________________________________________________________________________.
Weather has several components…
Air Temperature
the measure of the average _____________________________________________ in particles
Wind
___________________________________________________________________________________________
especially: the earth's air or the gas surrounding a planet in natural motion horizontally
Humidity
The amount of _______________________________________________________________________________
___________________________________________ -is a measure of the amount of water vapor present in the
air compared to the amount needed for saturation at a specific temperature
Precipitation
___________________________________________________________________________________________
Air temperature determines the form of precipitation that falls
5 main types of Precipitation: ____________________, ______________________, __________________,
Freezing Rain, and Hail
Clouds

Masses of small water droplets or ________________________________ that float in the air.

Three main types are ____________________, _____________________, and ____________________.

Other clouds are a ___________________________ of these three main types.
Air Masses
A __________________________________ that has properties similar to the part of the
_____________________________ over which it develops.
Air Mass Map
Tropical Maritime (Tm) - _______________________________________________________
Tropical Continental (Tc) – _______________________________________________________
Polar Maritime (Pm) – _______________________________________________________
Polar Continental (Pc) – _______________________________________________________
Arctic Maritime (Am) - _______________________________________________________
Air Pressure
________________________ = expanding or rising air
leaves behind ___________(L) pressure
_______________________ = sinking air
leaves an area of ___________ (H) pressure
Reading a Weather Map…
bars-connect points of the “________________”
Examples: ___________________ and wind speed
The further away the lines the lower the wind speed
Isobars
connects areas of _____________________________________
BAR comes from BARometric pressure
Isotherms
Connects areas of ___________________________________________
“therm” means temperature
Weather Station Model - (not seen on the TV)
______________________________________________ – the pressure that an air mass exerts on the Earth
Temperature – measure of the ________________________________________________; measured in °
Fahrenheit or ° Celsius
________________________ – measure of the ____________________________________________; it is the
temp the air must cool to in order to reach saturation
Wind Direction & Speed – the direction ____________________ which the wind blows and its speed (in knots)
Observed Weather – describes _________________________________
__________________________ – percentage of the sky covered with clouds
Fronts

A boundary between ____________________________of different density, moisture, or temperature.
Cold Front
The front edge of a ___________________ mass of clod air that pushes _____________________ a warmer air mass like
wedge
Warm Front
The front edge of advancing warm air mass that __________________________colder air with warmer air
Occluded Front
A front that forms when a cold air mass _________________ a warm air mass and lifts the warm air mass off the ground
and __________________________________________________________
Stationary Front
A front of air masses that moves either _____________________________ or _____________________________