Download Air Masses and their Movements

Tuesday January 11, 2017
• Please get out your blackwater field trip
forms
• Please get out your planner to parent
signature
• Open your books to 6.3 pages 200-207 and
read 6.3
• You will also need a c notes sheet for 6.3
– Sharpen pencils or get out a pen
Air Masses and their
Movements
Chapter 6.3
Benchmark for today:
SC.6.E.7.3 Describe how global patterns such as the jet
stream and ocean currents influence local weather in
measureable terms such as air temperature, air pressure,
wind direction, speed, humidity , and precipitation.
Today’s Learning Goal: The students will IDENTIFY
the major air masses, and explain how they move
There are 4 MAJOR types of Air
masses that influence the weather in
North America
1. Maritime tropical
2. Continental tropical
3. Maritime polar
4. Continental polar
Air mass
A huge body of air
that has similar
temperature,
humidity, and air
pressure at any
given height.
Tropical
Warm air masses
that form in the
tropics and have
low air pressure.
TROPICAL
Polar
Cold air masses
that form north of
50o north latitude
and south of 50o
south latitude,
with high air
pressure.
POLAR
Maritime
Air masses that
form over
oceans, usually
very humid.
Continental
Air masses that
form over land,
usually drier than
maritime air
masses.
What are the major air masses?
Maritime
tropical
Continental
tropical
Maritime
polar
Continental
polar
Wednesday January 11, 2017
• Please get out your blackwater field trip
forms
• Please get out your planner to parent
signature
• Open your books to 6.3 pages 200-207 and
read 6.3
• You will also need a c notes sheet for 6.3
– Sharpen pencils or get out a pen
Jet streams
Bands of high-speed
winds about 10 km
above Earth’s
surface; generally
blow from west to
east.
I get it! Now I know that the 4 major
types of air masses are…. Pg. 203
1. Maritime tropical
Wet/warm
2. Continental
tropical
Dry/warm
3. Maritime polar
4. Continental polar
Wet/cold
Dry/cold
The boundary where air masses
meet?
Front
Occluded
Cut off, as in a
front where a
warm air mass is
caught between
two cooler air
masses.
Weather @ the Front pgs. 204-205
Cold Front
Clouds, many
days of precipitation
WARM
FRONT
Clouds, heavy
precipitation
Stationary front
Clouds, many
days of precipitation
Occluded Front
Clouds, precipitation
What are the main types of fronts?
Cold Front 
Occluded 
Front
 Warm Front
Stationary
Front
What weather do cyclones and
anticyclones bring?
Cyclones and decreasing air
pressure are associated
with …
clouds, wind, and
precipitation.
Anticyclones are associated
with …
dry, clear weather.
Cyclone
A swirling center
of low air
pressure.
Anticyclone
High-pressure
centers of dry
air.
Air Masses and Their Movements
Cyclones and Anticyclones
Which image is a cyclone and which is an anticyclone? What is the air
motion direction of each?
Cyclone
Anticyclone
Air Masses and Their Movements
Pg. 207
Which circles are low-pressure centers and which are high-pressure
centers?
L
H
L
H
I get it! Now I know that… pg. 207
Cyclones cause….
Anticyclones cause…
clouds, wind, and
precipitation
dry, clear weather
You will need your books open
to 6.3
• Blackwater field trip
forms need to be in
my hand please
• Please turn in
summaries from c
notes yesterday
• You need a pencil
• You will need a
highlighter
• January 12, 2017
• Today you will complete
hand out 6.3 by using
your books. Work alone
unless instructed
otherwise.