Transcript Fronts - Mt. Gilead Exempted Village School District

Fronts
March 2011
Bell Work




1. Using a psychrometer, figure the relative
humidity in the classroom.
2. Yesterday, there were high, curl or “wispy”
clouds in the sky, indicating a change in the
weather. What type of clouds were they?
3. Which type of air mass may cause the type
of weather we are seeing today?
4. If thunderstorms were to roll in Mt. Gilead
later on this afternoon, which kind of clouds
would you expect to see?
Bell Work

What do the following letters represent
in an air mass?
(m)
(c)
(P)
(T)
Cloud Quiz







1. stratus
2. cirrus
3. cumulus
4. nimbo (nimbus)
5. alto
6. strato
7. cirro
Front

1. Front
Boundary that forms when two different air
masses meet
Cold Front

Map symbol
Weather Conditions
 Cold fronts move
fast, producing
thunderstorms,
heavy rain, or snow

Cold air meets and
moves a warm air
mass
Warm Front

Map symbol
Weather Conditions
 Nimbostratus clouds,
Usually drizzly rain
 After the front passes,
weather is clear and
warm.
Warm air meets and
over-rides a cold air
mass
Occluded Front

Map symbol
Weather Conditions
 Cool temperatures
with large amounts
of precipitation
Fast moving cold air
mass overtakes a
slower moving warm
air mass. Warm air ↑
Stationary Front

Map symbol
Weather Condition
 Usually drizzly
 After the front
passes, weather is
clear and warm

Cold air mass meets
a warm air mass
with little horizontal
movement